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- Ackley
- Adair
- Adams Township, Dallas County
- Adams Township, Delaware County
- Adams Township, Keokuk County
- Adams Township, Mahaska County
- Adams Township, Wapello County
- Adel
- Adel Township, Dallas County
- Afton
- Afton Township, Cherokee County
- Afton Township, Howard County
- Agency
- Agency Township, Wapello County
- Ainsworth
- Akron
- Albert City
- Albia
- Albion
- Albion Township, Butler County
- Albion Township, Howard County
- Alburnett
- Alden
- Alden Township, Hardin County
- Alleman
- Allen Township, Harrison County
- Allen Township, Polk County
- Allen Township, Warren County
- Allens Grove
- Allerton
- Allison
- Allison Township, Lyon County
- Allison Township, Osceola County
- Alta
- Alta Vista
- Alton
- Altoona
- Amaqua
- America
- Ames
- Amherst
- Amity
- Amsterdam
- Anamosa
- Anderson
- Andrew
- Anita
- Ankeny
- Anthon
- Aplington
- Arcadia
- Arcadia Township, Carroll County
- Arlington
- Arlington Township, Woodbury County
- Armstrong Grove
- Armstrong
- Arnolds Park
- Asbury
- Ashton
- Ashton Township, Monona County
- Atalissa
- Athens
- Atkins
- Atlantic
- Auburn
- Auburn Township, Fayette County
- Audubon
- Audubon Township, Audubon County
- Aurelia
- Avery Township, Hancock County
- Avery Township, Humboldt County
- Avoca
- Badger
- Badger Township, Webster County
- Bagley
- Baker Township, Guthrie County
- Baker Township, OBrien County
- Baker Township, Osceola County
- Baltimore
- Bancroft
- Banks
- Banner
- Barclay
- Barnes
- Barton
- Batavia
- Bath
- Battle Creek
- Battle
- Baxter
- Bayard
- Beacon
- Bear Creek
- Bear Grove Township, Cass County
- Bear Grove Township, Guthrie County
- Beaver Township, Boone County
- Beaver Township, Butler County
- Beaver Township, Dallas County
- Beaver Township, Grundy County
- Beaver Township, Guthrie County
- Beaver Township, Humboldt County
- Beaver Township, Polk County
- Bedford
- Bedford Township, Taylor County
- Belknap
- Bellair
- Bellevue
- Bellevue Township, Jackson County
- Bellville
- Belmond
- Belmond Township, Wright County
- Belmont
- Belvidere
- Bennett
- Bennezette
- Bennington
- Benton Township, Benton County
- Benton Township, Cass County
- Benton Township, Des Moines County
- Benton Township, Fremont County
- Benton Township, Keokuk County
- Benton Township, Lucas County
- Benton Township, Wayne County
- Bertram
- Bertram Township, Linn County
- Bethel
- Bettendorf
- Big Creek
- Big Grove Township, Benton County
- Big Grove Township, Johnson County
- Bingham
- Birmingham
- Black Hawk Township, Black Hawk County
- Black Hawk Township, Grundy County
- Black Hawk Township, Jefferson County
- Black Oak
- Blaine Township, Ida County
- Blaine Township, Wright County
- Blairsburg
- Blairstown
- Blakesburg
- Bloomfield Township, Clinton County
- Bloomfield Township, Polk County
- Bloomfield Township, Winneshiek County
- Bloomington Township, Decatur County
- Bloomington Township, Muscatine County
- Blue Grass
- Blue Grass Township, Scott County
- Bluff Creek
- Bluffton
- Boardman
- Bode
- Bonaparte
- Bonaparte Township, Van Buren County
- Bondurant
- Boomer
- Boone
- Boone Township, Dallas County
- Boone Township, Hancock County
- Boone Township, Wright County
- Boulder
- Boyden
- Boyer Township, Crawford County
- Boyer Township, Harrison County
- Boyer Valley
- Bradford
- Brandon
- Brandon Township, Jackson County
- Breda
- Bremen
- Brighton
- Brighton Township, Cass County
- Brighton Township, Washington County
- Bristol Township, Greene County
- Bristol Township, Worth County
- Britt
- Britt Township, Hancock County
- Bronson
- Brooke
- Brookfield Township, Clinton County
- Brookfield Township, Worth County
- Brooklyn
- Brown
- Bruce
- Buchanan Township, Jefferson County
- Buchanan Township, Page County
- Buckeye
- Buckingham
- Buena Vista Township, Clayton County
- Buena Vista Township, Jasper County
- Buffalo Center
- Buffalo
- Buffalo Township, Buchanan County
- Buffalo Township, Kossuth County
- Buffalo Township, Linn County
- Buffalo Township, Scott County
- Buffalo Township, Winnebago County
- Buncombe
- Burnside
- Burr Oak Township, Mitchell County
- Burr Oak Township, Winneshiek County
- Burrell
- Burt
- Burt Township, Kossuth County
- Bussey
- Butler Township, Butler County
- Butler Township, Calhoun County
- Butler Township, Jackson County
- Butler Township, Scott County
- Byron
- Calamus
- Caldwell
- Caledonia
- Calhoun Township, Calhoun County
- Calhoun Township, Harrison County
- Callender
- Calmar
- Calmar Township, Winneshiek County
- Camanche
- Camanche Township, Clinton County
- Cambridge
- Cameron
- Camp
- Canaan
- Canoe
- Canton
- Cantril
- Capel
- Carl
- Carlisle
- Carlton
- Carroll Township, OBrien County
- Carroll Township, Tama County
- Carson
- Carson Township, Pottawattamie County
- Carter Lake
- Cascade
- Cascade Township, Dubuque County
- Casey
- Cass Township, Boone County
- Cass Township, Cass County
- Cass Township, Cedar County
- Cass Township, Clayton County
- Cass Township, Guthrie County
- Cass Township, Hamilton County
- Cass Township, Harrison County
- Cass Township, Jones County
- Cass Township, Shelby County
- Cass Township, Wapello County
- Castle Grove
- Cedar Falls Township, Black Hawk County
- Cedar Rapids
- Cedar Township, Benton County
- Cedar Township, Black Hawk County
- Cedar Township, Calhoun County
- Cedar Township, Cherokee County
- Cedar Township, Floyd County
- Cedar Township, Greene County
- Cedar Township, Jefferson County
- Cedar Township, Johnson County
- Cedar Township, Lee County
- Cedar Township, Lucas County
- Cedar Township, Mahaska County
- Cedar Township, Mitchell County
- Cedar Township, Muscatine County
- Cedar Township, Pocahontas County
- Cedar Township, Sac County
- Cedar Township, Van Buren County
- Cedar Township, Washington County
- Centennial
- Center Grove
- Center Point
- Center Township, Allamakee County
- Center Township, Calhoun County
- Center Township, Cedar County
- Center Township, Clinton County
- Center Township, Decatur County
- Center Township, Dubuque County
- Center Township, Emmet County
- Center Township, Fayette County
- Center Township, Henry County
- Center Township, Jefferson County
- Center Township, Mills County
- Center Township, Monona County
- Center Township, OBrien County
- Center Township, Pocahontas County
- Center Township, Pottawattamie County
- Center Township, Shelby County
- Center Township, Sioux County
- Center Township, Wapello County
- Center Township, Winnebago County
- Central City
- Charleston
- Charlotte
- Charter Oak
- Charter Oak Township, Crawford County
- Chelsea
- Chequest
- Cherokee
- Cherokee Township, Cherokee County
- Chester Township, Howard County
- Chester Township, Poweshiek County
- Chickasaw
- Churdan
- Cincinnati
- Cincinnati Township, Harrison County
- Clarence
- Clarinda
- Clarion
- Clark
- Clarksville
- Clay Township, Clay County
- Clay Township, Grundy County
- Clay Township, Hardin County
- Clay Township, Jones County
- Clay Township, Marion County
- Clay Township, Polk County
- Clay Township, Shelby County
- Clay Township, Washington County
- Clay Township, Wayne County
- Clay Township, Webster County
- Clayton
- Clear Creek Township, Jasper County
- Clear Creek Township, Johnson County
- Clear Creek Township, Keokuk County
- Clear Lake Township, Cerro Gordo County
- Clear Lake Township, Hamilton County
- Clearfield
- Cleghorn
- Cleona
- Clermont
- Clermont Township, Fayette County
- Cleveland Township, Davis County
- Cleveland Township, Lyon County
- Clinton Township, Linn County
- Clinton Township, Ringgold County
- Clinton Township, Sac County
- Clive
- Coalville
- Coffins Grove
- Coggon
- Coldwater
- Colesburg
- Colfax
- Colfax Township, Boone County
- Colfax Township, Dallas County
- Colfax Township, Grundy County
- Colfax Township, Page County
- Colfax Township, Pocahontas County
- Colfax Township, Webster County
- College
- College Springs
- Collins
- Collins Township, Story County
- Colo
- Colony Township, Adams County
- Colony Township, Delaware County
- Columbia Township, Tama County
- Columbia Township, Wapello County
- Columbus City
- Columbus City Township, Louisa County
- Columbus Junction
- Competine
- Concord Township, Dubuque County
- Concord Township, Hancock County
- Concord Township, Hardin County
- Concord Township, Louisa County
- Concord Township, Woodbury County
- Concordia
- Conesville
- Cono
- Conrad
- Cook
- Coon
- Coon Rapids
- Coon Valley
- Cooper Township, Monona County
- Cooper Township, Webster County
- Coralville
- Corinth
- Corning
- Correctionville
- Corwin
- Corwith
- Corydon
- Corydon Township, Wayne County
- Coulter
- Council Bluffs
- Cox Creek
- Crawford Township, Madison County
- Crawford Township, Washington County
- Crawfordsville
- Crescent
- Crescent Township, Pottawattamie County
- Cresco
- Cresco Township, Kossuth County
- Crocker
- Crystal Lake
- Crystal Township, Hancock County
- Crystal Township, Tama County
- Cumberland
- Cummins
- Cushing
- Dahlonega
- Dale Township, Lyon County
- Dale Township, OBrien County
- Dallas Center
- Dallas Township, Dallas County
- Dallas Township, Marion County
- Dallas Township, Taylor County
- Danbury
- Danville Township, Des Moines County
- Danville Township, Worth County
- Davenport
- Davis City
- Dawson
- Dayton
- Dayton Township, Bremer County
- Dayton Township, Butler County
- Dayton Township, Cedar County
- Dayton Township, Chickasaw County
- Dayton Township, Iowa County
- Dayton Township, Webster County
- Dayton Township, Wright County
- De Soto
- De Witt
- De Witt Township, Clinton County
- Decatur
- Decorah
- Decorah Township, Winneshiek County
- Dedham
- Deep Creek
- Deep River
- Deep River Township, Poweshiek County
- Deer Creek Township, Mills County
- Deer Creek Township, Webster County
- Deer Creek Township, Worth County
- Deerfield
- Defiance
- Delana
- Delaware Township, Delaware County
- Delaware Township, Polk County
- Delaware Township, Sac County
- Delhi
- Delhi Township, Delaware County
- Delmar
- Deloit
- Delta
- Denison
- Denison Township, Crawford County
- Denmark Township, Emmet County
- Denmark Township, Lee County
- Denver
- Des Moines
- Des Moines Township, Boone County
- Des Moines Township, Dallas County
- Des Moines Township, Jasper County
- Des Moines Township, Jefferson County
- Des Moines Township, Lee County
- Des Moines Township, Polk County
- Des Moines Township, Van Buren County
- Dexter
- Diagonal
- Diamond
- Diamond Lake
- Dike
- Dixon
- Dodge Township, Boone County
- Dodge Township, Dubuque County
- Dodge Township, Guthrie County
- Dodge Township, Union County
- Donahue
- Donnellson
- Doon
- Doon Township, Lyon County
- Dougherty
- Douglas Township, Appanoose County
- Douglas Township, Audubon County
- Douglas Township, Boone County
- Douglas Township, Bremer County
- Douglas Township, Clay County
- Douglas Township, Harrison County
- Douglas Township, Ida County
- Douglas Township, Madison County
- Douglas Township, Mitchell County
- Douglas Township, Montgomery County
- Douglas Township, Page County
- Douglas Township, Polk County
- Douglas Township, Shelby County
- Douglas Township, Union County
- Douglas Township, Webster County
- Dover Township, Fayette County
- Dover Township, Pocahontas County
- Dow City
- Dows
- Doyle
- Drakesville
- Dresden
- Dubuque Township, Dubuque County
- Dumont
- Duncombe
- Dunkerton
- Dunlap
- Durant
- Dutch Creek
- Dyersville
- Dysart
- Eagle Grove
- Eagle Grove Township, Wright County
- Eagle Township, Black Hawk County
- Eagle Township, Kossuth County
- Eagle Township, Sioux County
- Earlham
- Earling
- Earlville
- Early
- East Boyer
- East Des Moines
- East
- East Lucas
- East Orange
- East River
- East Waterloo
- Eddyville
- Eden Township, Benton County
- Eden Township, Carroll County
- Eden Township, Clinton County
- Eden Township, Decatur County
- Eden Township, Fayette County
- Eden Township, Marshall County
- Eden Township, Sac County
- Edgewood
- Eldon
- Eldora Township, Hardin County
- Eldorado
- Eldridge
- Elgin
- Elgin Township, Lyon County
- Elgin Township, Plymouth County
- Eliot
- Elk Creek
- Elk Horn
- Elk River
- Elk Run Heights
- Elk Township, Buena Vista County
- Elk Township, Clayton County
- Elk Township, Delaware County
- Elkader
- Elkhart
- Elkhart Township, Polk County
- Elkhorn Township, Plymouth County
- Elkhorn Township, Webster County
- Ell
- Ellington Township, Hancock County
- Ellington Township, Palo Alto County
- Elliott
- Ellis
- Ellsworth
- Ellsworth Township, Emmet County
- Ellsworth Township, Hamilton County
- Elm Grove Township, Calhoun County
- Elm Grove Township, Louisa County
- Elma
- Ely
- Emerson
- Emmetsburg
- Emmetsburg Township, Palo Alto County
- English River Township, Keokuk County
- English River Township, Washington County
- English Township, Iowa County
- English Township, Lucas County
- Epworth
- Erin
- Essex
- Estherville
- Estherville Township, Emmet County
- Etna
- Eureka
- Evansdale
- Everly
- Ewoldt
- Excelsior
- Exira
- Exira Township, Audubon County
- Fabius
- Fairbank
- Fairbank Township, Buchanan County
- Fairfax
- Fairfax Township, Linn County
- Fairfield Township, Buena Vista County
- Fairfield Township, Cedar County
- Fairfield Township, Fayette County
- Fairfield Township, Grundy County
- Fairfield Township, Jackson County
- Fairfield Township, Palo Alto County
- Fairview Township, Allamakee County
- Fairview Township, Jasper County
- Fairview Township, Jones County
- Fairview Township, Osceola County
- Fairview Township, Shelby County
- Falls
- Farley
- Farmers Creek
- Farmersburg
- Farmersburg Township, Clayton County
- Farmington
- Farmington Township, Cedar County
- Farmington Township, Van Buren County
- Farnhamville
- Farragut
- Fayette Township, Decatur County
- Fayette Township, Linn County
- Felix
- Fenton
- Fenton Township, Kossuth County
- Fern Valley
- Fertile
- Fertile Township, Worth County
- Fillmore
- Fisher
- Flint River
- Florence
- Floyd
- Floyd Township, Floyd County
- Floyd Township, OBrien County
- Floyd Township, Sioux County
- Floyd Township, Woodbury County
- Fonda
- Fontanelle
- Forest City
- Forest City Township, Howard County
- Forest
- Fort Atkinson
- Fort Madison
- Four Mile
- Fox
- Fox River
- Frankfort
- Franklin Township, Allamakee County
- Franklin Township, Appanoose County
- Franklin Township, Bremer County
- Franklin Township, Cass County
- Franklin Township, Clarke County
- Franklin Township, Decatur County
- Franklin Township, Des Moines County
- Franklin Township, Greene County
- Franklin Township, Lee County
- Franklin Township, Linn County
- Franklin Township, Marion County
- Franklin Township, Monona County
- Franklin Township, OBrien County
- Franklin Township, Polk County
- Franklin Township, Story County
- Franklin Township, Washington County
- Frankville
- Fredericksburg
- Fredericksburg Township, Chickasaw County
- Frederika
- Fredonia
- Freedom Township, Hamilton County
- Freedom Township, Palo Alto County
- Freeman
- Fremont
- Fremont Township, Benton County
- Fremont Township, Bremer County
- Fremont Township, Buchanan County
- Fremont Township, Butler County
- Fremont Township, Cedar County
- Fremont Township, Clarke County
- Fremont Township, Fayette County
- Fremont Township, Hamilton County
- Fremont Township, Johnson County
- Fremont Township, Page County
- Fremont Township, Winneshiek County
- French Creek
- Fruitland
- Fruitland Township, Muscatine County
- Fulton Township, Muscatine County
- Fulton Township, Webster County
- Galva
- Galva Township, Ida County
- Garden Grove
- Garden
- Garfield Township, Calhoun County
- Garfield Township, Clay County
- Garfield Township, Hancock County
- Garfield Township, Kossuth County
- Garfield Township, Lyon County
- Garfield Township, Mahaska County
- Garfield Township, Montgomery County
- Garfield Township, Plymouth County
- Garfield Township, Pocahontas County
- Garfield Township, Sioux County
- Garnavillo
- Garnavillo Township, Clayton County
- Garner
- Garner Township, Pottawattamie County
- Garrison
- Garwin
- Geneseo Township, Cerro Gordo County
- Geneseo Township, Tama County
- Geneva
- George
- German Township, Grundy County
- German Township, Kossuth County
- Giard
- Gilbert
- Gilbertville
- Gillett Grove
- Gilman
- Gilman Township, Osceola County
- Gilmore City
- Gladbrook
- Glenwood
- Glenwood Township, Mills County
- Glenwood Township, Winneshiek County
- Glidden
- Glidden Township, Carroll County
- Goewey
- Goldfield
- Goodrich
- Goshen
- Gower
- Gowrie
- Gowrie Township, Webster County
- Graettinger
- Grafton
- Graham
- Grand Junction
- Grand Meadow Township, Cherokee County
- Grand Meadow Township, Clayton County
- Grand Mound
- Grand River Township, Adair County
- Grand River Township, Madison County
- Grand River Township, Wayne County
- Grandview
- Grandview Township, Louisa County
- Grange
- Granger
- Grant Township, Adams County
- Grant Township, Boone County
- Grant Township, Buena Vista County
- Grant Township, Carroll County
- Grant Township, Cass County
- Grant Township, Cerro Gordo County
- Grant Township, Clinton County
- Grant Township, Dallas County
- Grant Township, Franklin County
- Grant Township, Greene County
- Grant Township, Grundy County
- Grant Township, Guthrie County
- Grant Township, Hardin County
- Grant Township, Ida County
- Grant Township, Linn County
- Grant Township, Lyon County
- Grant Township, Monona County
- Grant Township, Montgomery County
- Grant Township, OBrien County
- Grant Township, Page County
- Grant Township, Plymouth County
- Grant Township, Pocahontas County
- Grant Township, Poweshiek County
- Grant Township, Sioux County
- Grant Township, Story County
- Grant Township, Tama County
- Grant Township, Taylor County
- Grant Township, Union County
- Grant Township, Winnebago County
- Grant Township, Woodbury County
- Grant Township, Wright County
- Granville
- Great Oak
- Greeley
- Greeley Township, Audubon County
- Greeley Township, Shelby County
- Green Bay Township, Clarke County
- Green Bay Township, Lee County
- Green Township, Fremont County
- Green Township, Wapello County
- Greencastle
- Greene
- Greene Township, Iowa County
- Greenfield
- Greenfield Township, Adair County
- Greenfield Township, Calhoun County
- Greenfield Township, Jones County
- Greenfield Township, Warren County
- Greenwood
- Griggs
- Grimes
- Grimes Township, Cerro Gordo County
- Griswold
- Grove Township, Adair County
- Grove Township, Cass County
- Grove Township, Davis County
- Grove Township, Humboldt County
- Grove Township, Shelby County
- Grove Township, Taylor County
- Grove Township, Worth County
- Grundy Center
- Guilford
- Guthrie Center
- Guttenberg
- Hale
- Hamilton Township, Franklin County
- Hamilton Township, Hamilton County
- Hamlin
- Hampshire
- Hancock
- Hanover Township, Allamakee County
- Hanover Township, Crawford County
- Harcourt
- Hardin Township, Greene County
- Hardin Township, Hardin County
- Hardin Township, Johnson County
- Hardin Township, Pottawattamie County
- Harlan Township, Fayette County
- Harlan Township, Page County
- Harpers Ferry
- Harrisburg
- Harrison Township, Adair County
- Harrison Township, Benton County
- Harrison Township, Boone County
- Harrison Township, Harrison County
- Harrison Township, Kossuth County
- Harrison Township, Lee County
- Harrison Township, Mahaska County
- Harrison Township, Osceola County
- Hartford
- Hartford Township, Iowa County
- Hartland
- Hartley
- Hartley Township, OBrien County
- Harvey
- Hawarden
- Hawkeye
- Hayes Township, Buena Vista County
- Hayes Township, Crawford County
- Hayes Township, Ida County
- Hazel Dell
- Hazel Green
- Hazleton
- Hazleton Township, Buchanan County
- Hebron
- Hedrick
- Henry
- Herdland
- Hesper
- Hiawatha
- Hickory Grove Township, Jasper County
- Hickory Grove Township, Scott County
- High Lake
- High Point
- Highland Township, Clayton County
- Highland Township, Greene County
- Highland Township, Guthrie County
- Highland Township, OBrien County
- Highland Township, Palo Alto County
- Highland Township, Tama County
- Highland Township, Union County
- Highland Township, Wapello County
- Highland Township, Washington County
- Highland Township, Winneshiek County
- Hills
- Hilton
- Hinton
- Holland
- Holland Township, Sioux County
- Holman
- Holstein
- Holt
- Holy Cross
- Homer Township, Benton County
- Homer Township, Buchanan County
- Honey Creek Township, Delaware County
- Honey Creek Township, Iowa County
- Hopkinton
- Hornick
- Horton
- Hospers
- Howard Center
- Howard Township, Howard County
- Howard Township, Story County
- Howard Township, Tama County
- Hubbard
- Hudson
- Hull
- Humboldt Township, Humboldt County
- Humeston
- Hungerford
- Huron
- Huxley
- Ida Grove
- Illyria
- Independence
- Independence Township, Appanoose County
- Independence Township, Hamilton County
- Independence Township, Jasper County
- Independence Township, Palo Alto County
- Indian Creek Township, Mills County
- Indian Creek Township, Story County
- Indian Village
- Indiana
- Ingham
- Ingraham
- Inland
- Inwood
- Ionia
- Iowa City
- Iowa Falls
- Iowa Township, Allamakee County
- Iowa Township, Benton County
- Iowa Township, Cedar County
- Iowa Township, Crawford County
- Iowa Township, Dubuque County
- Iowa Township, Iowa County
- Iowa Township, Jackson County
- Iowa Township, Marshall County
- Iowa Township, Washington County
- Iowa Township, Wright County
- Ireton
- Irvington
- Irwin
- Jackson Township, Adair County
- Jackson Township, Benton County
- Jackson Township, Boone County
- Jackson Township, Bremer County
- Jackson Township, Butler County
- Jackson Township, Calhoun County
- Jackson Township, Clarke County
- Jackson Township, Crawford County
- Jackson Township, Des Moines County
- Jackson Township, Greene County
- Jackson Township, Guthrie County
- Jackson Township, Hardin County
- Jackson Township, Harrison County
- Jackson Township, Henry County
- Jackson Township, Jackson County
- Jackson Township, Jones County
- Jackson Township, Keokuk County
- Jackson Township, Lee County
- Jackson Township, Linn County
- Jackson Township, Lucas County
- Jackson Township, Madison County
- Jackson Township, Monroe County
- Jackson Township, Poweshiek County
- Jackson Township, Sac County
- Jackson Township, Shelby County
- Jackson Township, Van Buren County
- Jackson Township, Warren County
- Jackson Township, Washington County
- Jackson Township, Wayne County
- Jackson Township, Webster County
- Jackson Township, Winneshiek County
- Jacksonville
- James
- Jamestown
- Janesville
- Jasper Township, Adams County
- Jasper Township, Carroll County
- Jefferson Township, Adair County
- Jefferson Township, Allamakee County
- Jefferson Township, Bremer County
- Jefferson Township, Buchanan County
- Jefferson Township, Butler County
- Jefferson Township, Clayton County
- Jefferson Township, Dubuque County
- Jefferson Township, Fayette County
- Jefferson Township, Harrison County
- Jefferson Township, Henry County
- Jefferson Township, Johnson County
- Jefferson Township, Lee County
- Jefferson Township, Louisa County
- Jefferson Township, Madison County
- Jefferson Township, Mahaska County
- Jefferson Township, Marshall County
- Jefferson Township, Polk County
- Jefferson Township, Poweshiek County
- Jefferson Township, Ringgold County
- Jefferson Township, Shelby County
- Jefferson Township, Taylor County
- Jefferson Township, Warren County
- Jenkins
- Jesup
- Jewell Junction
- Johns
- Johnson Township, Plymouth County
- Johnson Township, Webster County
- Johnston
- Jones
- Jordan
- Junction
- Kalona
- Kanawha
- Kane Township, Benton County
- Kane Township, Pottawattamie County
- Kedron
- Keg Creek
- Kellerton
- Kelley
- Kellogg
- Kellogg Township, Jasper County
- Kendrick
- Kennebec
- Kensett
- Kensett Township, Worth County
- Keokuk Township, Wapello County
- Keosauqua
- Keota
- Keswick
- Keystone
- Kimballton
- King
- Kingsley
- Kiron
- Klemme
- Kniest
- Knox Township, Clarke County
- Knox Township, Pottawattamie County
- Knoxville
- Knoxville Township, Marion County
- La Grange
- La Motte
- La Porte City
- Lacona
- Ladora
- Lafayette Township, Allamakee County
- Lafayette Township, Bremer County
- Lafayette Township, Keokuk County
- Lafayette Township, Story County
- Lake Creek
- Lake Mills
- Lake Park
- Lake Prairie
- Lake Township, Cerro Gordo County
- Lake Township, Clay County
- Lake Township, Humboldt County
- Lake Township, Monona County
- Lake Township, Muscatine County
- Lake Township, Pocahontas County
- Lake Township, Pottawattamie County
- Lake Township, Wright County
- Lake View
- Lakeport
- Lakeside
- Lakeville
- Lamont
- Lansing
- Lansing Township, Allamakee County
- Larchwood
- Larchwood Township, Lyon County
- Latimer
- Laurel
- Laurens
- Lawler
- Lawton
- Layton
- Le Claire
- Le Claire Township, Scott County
- Le Grand
- Le Grand Township, Marshall County
- Le Mars
- Le Roy
- Ledyard
- Lee Township, Adair County
- Lee Township, Buena Vista County
- Lee Township, Franklin County
- Lee Township, Madison County
- Lee Township, Polk County
- Lehigh
- Leland
- Lenox
- Lenox Township, Iowa County
- Leroy Township, Audubon County
- Leroy Township, Benton County
- Lester
- Letts
- Levey
- Lewis
- Lewis Township, Pottawattamie County
- Liberal
- Liberty Township, Buchanan County
- Liberty Township, Cherokee County
- Liberty Township, Clarke County
- Liberty Township, Clinton County
- Liberty Township, Dubuque County
- Liberty Township, Hamilton County
- Liberty Township, Hancock County
- Liberty Township, Jefferson County
- Liberty Township, Johnson County
- Liberty Township, Keokuk County
- Liberty Township, Lucas County
- Liberty Township, Marion County
- Liberty Township, Marshall County
- Liberty Township, Mitchell County
- Liberty Township, OBrien County
- Liberty Township, Plymouth County
- Liberty Township, Ringgold County
- Liberty Township, Scott County
- Liberty Township, Warren County
- Liberty Township, Woodbury County
- Liberty Township, Wright County
- Libertyville
- Lick Creek Township, Davis County
- Lick Creek Township, Van Buren County
- Lime Creek Township, Cerro Gordo County
- Lime Creek Township, Washington County
- Lime Springs
- Lincoln Township, Adair County
- Lincoln Township, Appanoose County
- Lincoln Township, Audubon County
- Lincoln Township, Black Hawk County
- Lincoln Township, Buena Vista County
- Lincoln Township, Calhoun County
- Lincoln Township, Cass County
- Lincoln Township, Cerro Gordo County
- Lincoln Township, Clay County
- Lincoln Township, Dallas County
- Lincoln Township, Emmet County
- Lincoln Township, Grundy County
- Lincoln Township, Hamilton County
- Lincoln Township, Harrison County
- Lincoln Township, Iowa County
- Lincoln Township, Johnson County
- Lincoln Township, Kossuth County
- Lincoln Township, Lucas County
- Lincoln Township, Madison County
- Lincoln Township, Mahaska County
- Lincoln Township, Monona County
- Lincoln Township, Montgomery County
- Lincoln Township, OBrien County
- Lincoln Township, Page County
- Lincoln Township, Plymouth County
- Lincoln Township, Pocahontas County
- Lincoln Township, Polk County
- Lincoln Township, Pottawattamie County
- Lincoln Township, Poweshiek County
- Lincoln Township, Ringgold County
- Lincoln Township, Scott County
- Lincoln Township, Shelby County
- Lincoln Township, Sioux County
- Lincoln Township, Story County
- Lincoln Township, Tama County
- Lincoln Township, Union County
- Lincoln Township, Warren County
- Lincoln Township, Winnebago County
- Lincoln Township, Winneshiek County
- Lincoln Township, Worth County
- Lincoln Township, Wright County
- Linden
- Lineville
- Linn Township, Cedar County
- Linn Township, Dallas County
- Linn Township, Linn County
- Linn Township, Warren County
- Linton
- Lisbon
- Liscomb
- Liscomb Township, Marshall County
- Liston
- Little Rock
- Little Sioux Township, Harrison County
- Little Sioux Township, Woodbury County
- Livermore
- Lizard
- Lloyd
- Lockridge
- Lockridge Township, Jefferson County
- Locust Grove Township, Fremont County
- Locust Grove Township, Jefferson County
- Lodomillo
- Logan
- Logan Township, Ida County
- Logan Township, Lyon County
- Logan Township, Marshall County
- Logan Township, Sioux County
- Logan Township, Winnebago County
- Lohrville
- Lone Tree
- Lone Tree Township, Clay County
- Long Creek
- Long Grove
- Lorimor
- Lost Grove
- Lost Island
- Lost Nation
- Lotts Creek
- Lovell
- Lovilia
- Lowden
- Lu Verne
- Lu Verne Township, Kossuth County
- Ludlow
- Luxemburg
- Lynn Grove
- Lynn
- Lynnville
- Lyon Township, Hamilton County
- Lyon Township, Lyon County
- Lyons
- Lytton
- Macedonia
- Macedonia Township, Pottawattamie County
- Madison Township, Buchanan County
- Madison Township, Butler County
- Madison Township, Clarke County
- Madison Township, Fremont County
- Madison Township, Hancock County
- Madison Township, Johnson County
- Madison Township, Jones County
- Madison Township, Lee County
- Madison Township, Madison County
- Madison Township, Mahaska County
- Madison Township, Polk County
- Madison Township, Poweshiek County
- Madison Township, Winneshiek County
- Madrid
- Magnolia
- Magor
- Maine
- Makee
- Malaka
- Malcom
- Malcom Township, Poweshiek County
- Mallard
- Mallory
- Manchester
- Manilla
- Manly
- Manson
- Mantua
- Maple River
- Maple Township, Ida County
- Maple Township, Monona County
- Maple Valley
- Mapleton
- Maquoketa
- Maquoketa Township, Jackson County
- Marathon
- Marble Rock
- Marcus
- Marcus Township, Cherokee County
- Marcy
- Marengo
- Marengo Township, Iowa County
- Marietta
- Marion
- Marion Township, Clayton County
- Marion Township, Davis County
- Marion Township, Franklin County
- Marion Township, Hamilton County
- Marion Township, Henry County
- Marion Township, Lee County
- Marion Township, Linn County
- Marion Township, Marshall County
- Marion Township, Plymouth County
- Marion Township, Washington County
- Mariposa
- Marquette
- Marshall Township, Louisa County
- Marshall Township, Marshall County
- Marshall Township, Pocahontas County
- Marshall Township, Taylor County
- Marshalltown
- Martelle
- Martensdale
- Mason Township, Cerro Gordo County
- Mason Township, Taylor County
- Massena
- Massena Township, Cass County
- Massillon
- Maurice
- Maxfield
- Maxwell
- Maynard
- McCallsburg
- McCausland
- McGregor
- Meadow Township, Clay County
- Meadow Township, Plymouth County
- Mechanicsville
- Melbourne
- Melcher-Dallas
- Melrose
- Melville
- Mendon
- Menlo
- Mercer
- Merrill
- Meservey
- Middlefield
- Midland
- Miles
- Milford
- Milford Township, Crawford County
- Milford Township, Dickinson County
- Milford Township, Story County
- Military
- Miller
- Millville
- Milo
- Milo Township, Delaware County
- Milton
- Minburn
- Minden
- Minden Township, Pottawattamie County
- Minerva
- Mingo
- Missouri Valley
- Mitchell
- Mitchellville
- Modale
- Mondamin
- Monmouth
- Monona
- Monona Township, Clayton County
- Monroe
- Monroe Township, Benton County
- Monroe Township, Butler County
- Monroe Township, Fremont County
- Monroe Township, Johnson County
- Monroe Township, Linn County
- Monroe Township, Madison County
- Monroe Township, Mahaska County
- Monroe Township, Monroe County
- Monroe Township, Shelby County
- Montezuma
- Monticello
- Montpelier
- Montrose
- Montrose Township, Lee County
- Moravia
- Morgan Township, Crawford County
- Morgan Township, Franklin County
- Morgan Township, Harrison County
- Morgan Township, Woodbury County
- Morning Sun
- Morning Sun Township, Louisa County
- Morton
- Mosalem
- Moscow
- Mott
- Moulton
- Mound Prairie
- Mount Valley
- Mount Vernon
- Mount Vernon Township, Black Hawk County
- Mount Vernon Township, Cerro Gordo County
- Moville
- Moville Township, Woodbury County
- Murray
- Muscatine
- Mystic
- Nashua
- Nassau
- Nebraska
- Neola
- Neola Township, Pottawattamie County
- Nevada
- Nevada Township, Story County
- New Albany
- New Albin
- New Buda
- New Hampton
- New Hampton Township, Chickasaw County
- New Hartford
- New Hope
- New London
- New London Township, Henry County
- New Market
- New Oregon
- New Sharon
- New Vienna
- New Virginia
- New Wine
- Newark
- Newburg
- Newell
- Newell Township, Buena Vista County
- Newhall
- Newport
- Newton
- Newton Township, Buchanan County
- Newton Township, Carroll County
- Newton Township, Jasper County
- Newton Township, Winnebago County
- Nichols
- Niles
- Nishnabotny
- Noble
- Nodaway Township, Adams County
- Nodaway Township, Page County
- Nodaway Township, Taylor County
- Nokomis
- Nora Springs
- North English
- North Fork
- North Liberty
- Northwood
- Norwalk
- Norwalk Township, Pottawattamie County
- Norway
- Norway Township, Humboldt County
- Norway Township, Winnebago County
- Norway Township, Wright County
- Oak Dale
- Oak
- Oakfield
- Oakland
- Oakland Township, Franklin County
- Oakland Township, Louisa County
- Oakville
- Ocheyedan
- Ocheyedan Township, Osceola County
- Odebolt
- Oelwein
- Ogden
- Ohio
- Okoboji
- Okoboji Township, Dickinson County
- Olin
- Olive
- Omega
- Oneida Township, Delaware County
- Oneida Township, Tama County
- Oran
- Orange City
- Orange Township, Black Hawk County
- Orange Township, Clinton County
- Orange Township, Guthrie County
- Oregon
- Orient
- Orient Township, Adair County
- Orleans
- Orleans Township, Winneshiek County
- Orono
- Orthel
- Osage
- Osage Township, Mitchell County
- Osceola Township, Clarke County
- Osceola Township, Franklin County
- Ossian
- Otho
- Otho Township, Webster County
- Oto
- Otranto
- Otter Creek Township, Crawford County
- Otter Creek Township, Jackson County
- Otter Creek Township, Linn County
- Otter Creek Township, Lucas County
- Otter Creek Township, Tama County
- Otter
- Ottumwa
- Owen
- Oxford
- Oxford Junction
- Oxford Township, Johnson County
- Oxford Township, Jones County
- Pacific Junction
- Paint Creek
- Palermo
- Palestine
- Palmyra
- Palo Alto
- Palo
- Panora
- Paradise
- Paris
- Park View
- Parkersburg
- Paton
- Paton Township, Greene County
- Paullina
- Pella
- Penn Township, Guthrie County
- Penn Township, Jefferson County
- Penn Township, Johnson County
- Penn Township, Madison County
- Peoples
- Peosta
- Perry
- Perry Township, Buchanan County
- Perry Township, Davis County
- Perry Township, Jackson County
- Perry Township, Plymouth County
- Perry Township, Tama County
- Persia
- Peru
- Peterson
- Peterson Township, Clay County
- Pierce
- Pierson
- Pike
- Pilot Grove
- Pilot Mound
- Pilot Township, Cherokee County
- Pilot Township, Iowa County
- Pioneer
- Pisgah
- Pitcher
- Pittsford
- Plainfield
- Plank
- Plato
- Platte Township, Taylor County
- Platte Township, Union County
- Plattville
- Pleasant Grove Township, Des Moines County
- Pleasant Grove Township, Floyd County
- Pleasant Grove Township, Mahaska County
- Pleasant Grove Township, Marion County
- Pleasant Hill
- Pleasant Ridge
- Pleasant Township, Appanoose County
- Pleasant Township, Cass County
- Pleasant Township, Hardin County
- Pleasant Township, Lucas County
- Pleasant Township, Monroe County
- Pleasant Township, Pottawattamie County
- Pleasant Township, Poweshiek County
- Pleasant Township, Wapello County
- Pleasant Township, Winneshiek County
- Pleasant Township, Wright County
- Pleasant Valley Township, Carroll County
- Pleasant Valley Township, Cerro Gordo County
- Pleasant Valley Township, Fayette County
- Pleasant Valley Township, Grundy County
- Pleasant Valley Township, Johnson County
- Pleasant Valley Township, Scott County
- Pleasant Valley Township, Webster County
- Pleasantville
- Plum Creek
- Plymouth
- Plymouth Township, Plymouth County
- Pocahontas
- Poe
- Poland
- Polk City
- Polk Township, Benton County
- Polk Township, Bremer County
- Polk Township, Jefferson County
- Polk Township, Shelby County
- Polk Township, Wapello County
- Pomeroy
- Port Louisa
- Portland Township, Cerro Gordo County
- Portland Township, Kossuth County
- Portland Township, Plymouth County
- Post
- Postville
- Poweshiek
- Powhatan
- Poyner
- Prairie City
- Prairie Creek
- Prairie Springs
- Prairie Township, Davis County
- Prairie Township, Delaware County
- Prairie Township, Keokuk County
- Prairie Township, Kossuth County
- Prairie Township, Mahaska County
- Prescott
- Prescott Township, Adams County
- Preston
- Preston Township, Plymouth County
- Primghar
- Princeton
- Princeton Township, Scott County
- Protivin
- Providence Township, Buena Vista County
- Providence Township, Hardin County
- Prussia
- Pulaski
- Putnam Township, Fayette County
- Putnam Township, Linn County
- Pymosa
- Quasqueton
- Quimby
- Quincy
- Radcliffe
- Raglan
- Rake
- Ramsey
- Rawles
- Raymond
- Read
- Reading Township, Calhoun County
- Reading Township, Sioux County
- Readlyn
- Red Oak
- Red Oak Township, Cedar County
- Red Oak Township, Montgomery County
- Red Rock
- Redfield
- Reeve
- Reinbeck
- Remsen
- Remsen Township, Plymouth County
- Renwick
- Rhodes
- Rice
- Riceville
- Richland
- Richland Township, Adair County
- Richland Township, Carroll County
- Richland Township, Chickasaw County
- Richland Township, Decatur County
- Richland Township, Delaware County
- Richland Township, Dickinson County
- Richland Township, Franklin County
- Richland Township, Guthrie County
- Richland Township, Jackson County
- Richland Township, Jasper County
- Richland Township, Jones County
- Richland Township, Keokuk County
- Richland Township, Lyon County
- Richland Township, Mahaska County
- Richland Township, Sac County
- Richland Township, Story County
- Richland Township, Tama County
- Richland Township, Wapello County
- Richland Township, Warren County
- Richman
- Ridgeway
- Ringsted
- Ripley
- Rippey
- Riverdale
- Riverdale Township, Kossuth County
- Riverside
- Riverside Township, Fremont County
- Riverside Township, Lyon County
- Riverton
- Riverton Township, Clay County
- Riverton Township, Floyd County
- Riverton Township, Fremont County
- Robins
- Rochester
- Rock Creek
- Rock Grove
- Rock Rapids
- Rock Township, Cherokee County
- Rock Township, Lyon County
- Rock Township, Mitchell County
- Rock Township, Sioux County
- Rock Township, Woodbury County
- Rock Valley
- Rockford
- Rockford Township, Floyd County
- Rockford Township, Pottawattamie County
- Rockwell City
- Rockwell
- Roland
- Roland Township, Webster County
- Rome
- Roscoe
- Rose Grove
- Roselle
- Ross Township, Franklin County
- Ross Township, Taylor County
- Round Prairie
- Rowley
- Royal
- Rudd
- Rudd Township, Floyd County
- Runnells
- Rush Lake
- Russell
- Ruthven
- Rutland Township, Humboldt County
- Rutland Township, Woodbury County
- Ryan
- Sabula
- Sac City
- Sac
- Salem
- Salem Township, Henry County
- Salix
- Salt Creek Township, Davis County
- Salt Creek Township, Tama County
- Sanborn
- Sand Creek
- Saratoga
- Saylor
- Saylorville
- Schaller
- Schleswig
- Scotch Grove
- Scott Township, Buena Vista County
- Scott Township, Fayette County
- Scott Township, Floyd County
- Scott Township, Franklin County
- Scott Township, Fremont County
- Scott Township, Hamilton County
- Scott Township, Henry County
- Scott Township, Johnson County
- Scott Township, Madison County
- Scott Township, Mahaska County
- Scott Township, Montgomery County
- Scott Township, Poweshiek County
- Scranton
- Scranton Township, Greene County
- Seely
- Seneca
- Sergeant Bluff
- Seventy-Six Township, Muscatine County
- Seventy-Six Township, Washington County
- Seymour
- Sharon Township, Appanoose County
- Sharon Township, Audubon County
- Sharon Township, Clinton County
- Sharon Township, Johnson County
- Shelby
- Shelby Township, Shelby County
- Sheldahl
- Sheldon
- Shell Rock
- Shell Rock Township, Butler County
- Shenandoah
- Sheridan Township, Carroll County
- Sheridan Township, Cherokee County
- Sheridan Township, Poweshiek County
- Sheridan Township, Scott County
- Sheridan Township, Sioux County
- Sherman Township, Calhoun County
- Sherman Township, Hardin County
- Sherman Township, Jasper County
- Sherman Township, Kossuth County
- Sherman Township, Monona County
- Sherman Township, Montgomery County
- Sherman Township, Pocahontas County
- Sherman Township, Sioux County
- Sherman Township, Story County
- Shiloh
- Shueyville
- Sibley
- Sidney
- Sidney Township, Fremont County
- Sigourney
- Sigourney Township, Keokuk County
- Silver City
- Silver Creek Township, Ida County
- Silver Creek Township, Mills County
- Silver Creek Township, Pottawattamie County
- Silver
- Silver Lake Township, Dickinson County
- Silver Lake Township, Palo Alto County
- Silver Lake Township, Worth County
- Sioux Center
- Sioux City
- Sioux Township, Clay County
- Sioux Township, Lyon County
- Sioux Township, Plymouth County
- Sioux Township, Sioux County
- Slater
- Sloan
- Sloan Township, Woodbury County
- Smithfield
- Soap Creek
- Soldier Township, Crawford County
- Soldier Township, Monona County
- Solon
- South Fork Township, Delaware County
- South Fork Township, Jackson County
- South Fork Township, Wayne County
- South
- Spaulding
- Sperry
- Spillville
- Spirit Lake
- Spirit Lake Township, Dickinson County
- Spring Creek Township, Black Hawk County
- Spring Creek Township, Mahaska County
- Spring Creek Township, Tama County
- Spring Grove
- Spring
- Spring Rock
- Spring Valley Township, Dallas County
- Spring Valley Township, Monona County
- Springdale
- Springfield Township, Cedar County
- Springfield Township, Winneshiek County
- Springville
- Squaw
- St. Ansgar
- St. Ansgar Township, Mitchell County
- St. Charles
- St. Charles Township, Floyd County
- St. Clair Township, Benton County
- St. Clair Township, Monona County
- St. John
- St. Marys
- Stacyville
- Stacyville Township, Mitchell County
- Stanhope
- Stanton
- Stanton Township, Plymouth County
- Stanwood
- Stapleton
- State Center
- State Center Township, Marshall County
- Steady Run
- Steamboat Rock
- Stockholm
- Stockport
- Story City
- Stratford
- Strawberry Point
- Stuart
- Stuart Township, Guthrie County
- Sugar Creek Township, Cedar County
- Sugar Creek Township, Poweshiek County
- Sugar Grove
- Sully
- Summerset
- Summit Township, Adair County
- Summit Township, Clay County
- Summit Township, Marion County
- Summit Township, OBrien County
- Sumner No. 2
- Sumner Township, Buchanan County
- Sumner Township, Iowa County
- Sumner Township, Webster County
- Sumner Township, Winneshiek County
- Superior
- Sutherland
- Swan Lake Township, Emmet County
- Swan Lake Township, Pocahontas County
- Swea City
- Swea
- Sweetland
- Swisher
- Table Mound
- Tama
- Tama Township, Des Moines County
- Tama Township, Tama County
- Tarkio
- Taylor Township, Allamakee County
- Taylor Township, Appanoose County
- Taylor Township, Benton County
- Taylor Township, Dubuque County
- Taylor Township, Harrison County
- Taylor Township, Marshall County
- Templeton
- Terril
- Tete Des Morts
- Thompson
- Thompson Township, Guthrie County
- Thornton
- Tiffin
- Tilden
- Timber Creek
- Tingley
- Tippecanoe
- Tipton
- Tipton Township, Hardin County
- Titonka
- Toledo
- Toledo Township, Tama County
- Traer
- Trenton
- Treynor
- Tripoli
- Troy Township, Clarke County
- Troy Township, Iowa County
- Troy Township, Monroe County
- Troy Township, Wright County
- Truro
- Twelve Mile Lake
- Twin Lake
- Twin Lakes
- Udell
- Ulster
- Underwood
- Union City
- Union
- Union Prairie
- Union Township, Adair County
- Union Township, Adams County
- Union Township, Benton County
- Union Township, Black Hawk County
- Union Township, Boone County
- Union Township, Calhoun County
- Union Township, Carroll County
- Union Township, Cass County
- Union Township, Cerro Gordo County
- Union Township, Crawford County
- Union Township, Dallas County
- Union Township, Davis County
- Union Township, Delaware County
- Union Township, Des Moines County
- Union Township, Fayette County
- Union Township, Floyd County
- Union Township, Hardin County
- Union Township, Harrison County
- Union Township, Jackson County
- Union Township, Johnson County
- Union Township, Kossuth County
- Union Township, Louisa County
- Union Township, Lucas County
- Union Township, Madison County
- Union Township, Mahaska County
- Union Township, Marion County
- Union Township, Mitchell County
- Union Township, Monroe County
- Union Township, OBrien County
- Union Township, Plymouth County
- Union Township, Polk County
- Union Township, Poweshiek County
- Union Township, Ringgold County
- Union Township, Shelby County
- Union Township, Story County
- Union Township, Union County
- Union Township, Van Buren County
- Union Township, Warren County
- Union Township, Wayne County
- Union Township, Woodbury County
- Union Township, Worth County
- University Heights
- University Park
- Urbana
- Urbana Township, Monroe County
- Urbandale
- Ute
- Utica
- Vail
- Valley Township, Guthrie County
- Valley Township, Page County
- Valley Township, Pottawattamie County
- Van Buren Township, Jackson County
- Van Buren Township, Keokuk County
- Van Buren Township, Lee County
- Van Buren Township, Van Buren County
- Van Horne
- Van Meter
- Van Meter Township, Dallas County
- Ventura
- Vermillion
- Vernon Springs
- Vernon Township, Dubuque County
- Vernon Township, Humboldt County
- Vernon Township, Van Buren County
- Vernon Township, Wright County
- Victor
- Victoria
- Victory
- Vienna
- Village
- Villisca
- Viola Township, Osceola County
- Viola Township, Sac County
- Virginia
- Volga
- Volga Township, Clayton County
- Wacousta
- Wadena
- Wagner
- Wahpeton
- Walcott
- Walford
- Walker
- Wall Lake
- Wall Lake Township, Sac County
- Wall Lake Township, Wright County
- Walnut
- Walnut Township, Adair County
- Walnut Township, Appanoose County
- Walnut Township, Dallas County
- Walnut Township, Fremont County
- Walnut Township, Jefferson County
- Walnut Township, Madison County
- Walnut Township, Palo Alto County
- Walnut Township, Polk County
- Walnut Township, Wayne County
- Wapello
- Wapello Township, Louisa County
- Wapsinonoc
- Ward
- Warren Township, Bremer County
- Warren Township, Keokuk County
- Warren Township, Lucas County
- Warren Township, Poweshiek County
- Warren Township, Story County
- Warren Township, Wayne County
- Washington
- Washington Township, Adair County
- Washington Township, Adams County
- Washington Township, Appanoose County
- Washington Township, Black Hawk County
- Washington Township, Bremer County
- Washington Township, Buchanan County
- Washington Township, Buena Vista County
- Washington Township, Butler County
- Washington Township, Carroll County
- Washington Township, Cass County
- Washington Township, Chickasaw County
- Washington Township, Clarke County
- Washington Township, Clinton County
- Washington Township, Crawford County
- Washington Township, Dallas County
- Washington Township, Des Moines County
- Washington Township, Dubuque County
- Washington Township, Fremont County
- Washington Township, Greene County
- Washington Township, Grundy County
- Washington Township, Harrison County
- Washington Township, Iowa County
- Washington Township, Jackson County
- Washington Township, Jasper County
- Washington Township, Johnson County
- Washington Township, Jones County
- Washington Township, Keokuk County
- Washington Township, Lee County
- Washington Township, Linn County
- Washington Township, Lucas County
- Washington Township, Marion County
- Washington Township, Marshall County
- Washington Township, Montgomery County
- Washington Township, Page County
- Washington Township, Plymouth County
- Washington Township, Polk County
- Washington Township, Pottawattamie County
- Washington Township, Poweshiek County
- Washington Township, Ringgold County
- Washington Township, Shelby County
- Washington Township, Sioux County
- Washington Township, Story County
- Washington Township, Taylor County
- Washington Township, Wapello County
- Washington Township, Washington County
- Washington Township, Wayne County
- Washington Township, Webster County
- Washington Township, Winneshiek County
- Washta
- Waterford Township, Clay County
- Waterford Township, Clinton County
- Waterloo Township, Allamakee County
- Waterman
- Waucoma
- Waukee
- Waukon
- Waveland
- Wayland
- Wayne Township, Henry County
- Wayne Township, Jones County
- Wayne Township, Mitchell County
- Weaver
- Webster Township, Hamilton County
- Webster Township, Madison County
- Webster Township, Polk County
- Webster Township, Webster County
- Welcome
- Wellman
- Wells
- Wellsburg
- Welton
- Wesley
- Wesley Township, Kossuth County
- West Bend
- West Bend Township, Palo Alto County
- West Branch
- West Branch Township, Sioux County
- West Des Moines
- West Fork Township, Franklin County
- West Fork Township, Monona County
- West Fork Township, Woodbury County
- West Grove
- West
- West Lancaster
- West Liberty
- West Lincoln
- West Lucas
- West Okoboji
- West Point
- West Point Township, Butler County
- West Point Township, Lee County
- West Side
- Westburg
- Westfield Township, Fayette County
- Westfield Township, Plymouth County
- Westgate
- Westphalia
- Westside
- What Cheer
- Wheatland
- Wheatland Township, Carroll County
- Wheeler Township, Lyon County
- Wheeler Township, Sac County
- White Breast
- White Cloud
- White Oak Township, Mahaska County
- White Oak Township, Warren County
- Whitebreast
- Whitewater
- Whiting
- Whittemore
- Whittemore Township, Kossuth County
- Williams
- Williams Township, Calhoun County
- Williams Township, Hamilton County
- Williamsburg
- Willow Township, Cherokee County
- Willow Township, Crawford County
- Willow Township, Woodbury County
- Wilson
- Wilton
- Wilton Township, Muscatine County
- Windsor Heights
- Windsor
- Winfield
- Winfield Township, Scott County
- Winthrop
- Wisner
- Wolf Creek
- Woodbine
- Woodburn
- Woodbury
- Woodward
- Woolstock
- Worth
- Worthington
- Wright Township, Pottawattamie County
- Wright Township, Wayne County
- Wyacondah
- Wyoming
- Wyoming Township, Jones County
- Yale
- Yell
- Yellow Springs
- York Township, Iowa County
- York Township, Pottawattamie County
- York Township, Tama County
- Zearing