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- Abingdon
- Abington
- Adams
- Addieville
- Addison
- Addison Township, DuPage County
- Aetna
- Afton
- Akron
- Alba
- Albany
- Albany Township, Whiteside County
- Albers
- Albion
- Alden
- Aledo
- Alexis
- Algonquin
- Algonquin Township, McHenry County
- Alhambra
- Alhambra Township, Madison County
- Allen
- Allendale
- Allens Grove
- Allerton
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- Allison
- Alma
- Alma Township, Marion County
- Alorton
- Alpha
- Alsey
- Alsip
- Altamont
- Alto
- Alto Pass
- Alton
- Alton Township, Madison County
- Altona
- Alvin
- Amboy
- Amboy Township, Lee County
- Amity
- Anchor
- Andalusia
- Andalusia Township, Rock Island County
- Anderson
- Andover
- Andover Township, Henry County
- Anna
- Annawan
- Annawan Township, Henry County
- Antioch
- Antioch Township, Lake County
- Appanoose
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- Apple River Township, Jo Daviess County
- Arcola
- Arcola Township, Douglas County
- Arenzville
- Arenzville Township, Cass County
- Argenta
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- Aroma
- Aroma Park
- Arrington
- Arrowsmith
- Arrowsmith Township, McLean County
- Artesia
- Arthur
- Asbury
- Ash Grove Township, Iroquois County
- Ash Grove Township, Shelby County
- Ashkum
- Ashkum Township, Iroquois County
- Ashland
- Ashland Township, Cass County
- Ashley
- Ashley Township, Washington County
- Ashmore
- Ashmore Township, Coles County
- Ashton
- Ashton Township, Lee County
- Assumption
- Assumption Township, Christian County
- Astoria
- Astoria Township, Fulton County
- Athens
- Athensville
- Atkinson
- Atkinson Township, Henry County
- Atlanta
- Atlanta Township, Logan County
- Atlas
- Atwood
- Auburn
- Auburn Township, Clark County
- Auburn Township, Sangamon County
- Audubon
- Augusta
- Augusta Township, Hancock County
- Aurora
- Aurora Township, Kane County
- Austin
- Aux Sable
- Ava
- Avena
- Aviston
- Avoca
- Avon
- Avon Township, Lake County
- Ayers
- Bainbridge
- Bald Bluff
- Bald Hill
- Baldwin
- Ball
- Banner Township, Effingham County
- Banner Township, Fulton County
- Bannockburn
- Barnett
- Barnhill
- Barr
- Barren
- Barrington Hills
- Barrington
- Barrington Township, Cook County
- Barry
- Barry Township, Pike County
- Bartelso
- Bartlett
- Bartonville
- Batavia
- Batavia Township, Kane County
- Bath
- Bath Township, Mason County
- Bay View Gardens
- Baylis
- Beach Park
- Bear Creek Township, Christian County
- Bear Creek Township, Hancock County
- Bear Grove
- Beardstown
- Beardstown Township, Cass County
- Beaucoup
- Beaver Creek
- Beaver
- Beaverville
- Beaverville Township, Iroquois County
- Beckemeyer
- Bedford
- Bedford Park
- Beecher City
- Beecher
- Belgium
- Bell Plain
- Belle Rive
- Belleville
- Belleville Township, St. Clair County
- Bellevue
- Bellflower
- Bellflower Township, McLean County
- Bellmont
- Bellwood
- Belmont
- Belvidere
- Belvidere Township, Boone County
- Bement
- Bement Township, Piatt County
- Benld
- Bennington
- Bensenville
- Benson
- Benton
- Benton Township, Franklin County
- Benton Township, Lake County
- Berkeley
- Berlin
- Bernadotte
- Berry
- Berwick
- Berwyn
- Berwyn Township, Cook County
- Bethalto
- Bethany
- Bethel
- Beverly
- Bible Grove
- Big Grove
- Big Mound
- Big Rock
- Big Spring
- Biggsville
- Biggsville Township, Henderson County
- Bird
- Bishop
- Bismarck
- Blackberry
- Blackhawk
- Blair
- Blairsville
- Blandinsville
- Blandinsville Township, McDonough County
- Blissville
- Bloom
- Bloomingdale
- Bloomingdale Township, DuPage County
- Bloomington City
- Bloomington
- Bloomington Township, McLean County
- Blount
- Blue Island
- Blue Mound
- Blue Mound Township, Macon County
- Blue Mound Township, McLean County
- Blue Ridge
- Bluff Springs
- Bluffdale
- Bluffs
- Bluford
- Bois D'Arc
- Bolingbrook
- Bolo
- Bond
- Bondville
- Bone Gap
- Bonfield
- Bonnie
- Bonpas
- Bonus
- Boone
- Boulder Hill
- Bourbon
- Bourbonnais
- Bourbonnais Township, Kankakee County
- Bowdre
- Bowen
- Bowlesville
- Bowling Green
- Bowling
- Boynton
- Braceville
- Braceville Township, Grundy County
- Bradford
- Bradford Township, Lee County
- Bradley
- Bradley Township, Jackson County
- Braidwood
- Breese
- Breese Township, Clinton County
- Bremen
- Brenton
- Bridgeport
- Bridgeport Township, Lawrence County
- Bridgeview
- Brighton
- Brighton Township, Macoupin County
- Brimfield
- Brimfield Township, Peoria County
- Bristol
- Broadlands
- Broadview
- Broadwell
- Brocton
- Brookfield
- Brookfield Township, La Salle County
- Brooklyn
- Brooklyn Township, Lee County
- Brooklyn Township, Schuyler County
- Brookport
- Brookside
- Brookville
- Broughton
- Brouilletts Creek
- Brown
- Browning Township, Franklin County
- Browning Township, Schuyler County
- Browns
- Brownstown
- Bruce
- Brushy
- Brushy Mound
- Brussels
- Bryant
- Buck
- Buckeye
- Buckhart
- Buckheart
- Buckley
- Buckner
- Buda
- Buena Vista
- Buffalo Grove
- Buffalo Hart
- Buffalo
- Buffalo Prairie
- Buffalo Township, Ogle County
- Bull Valley
- Buncombe
- Bunker Hill
- Bunker Hill Township, Macoupin County
- Burbank
- Bureau
- Bureau Junction
- Burgess
- Burlington
- Burlington Township, Kane County
- Burnham
- Burns
- Burnt Prairie
- Burr Ridge
- Burritt
- Burton Township, Adams County
- Burton Township, McHenry County
- Bushnell
- Bushnell Township, McDonough County
- Butler Grove
- Butler
- Button
- Byron
- Byron Township, Ogle County
- Cabery
- Cahokia
- Cahokia Township, Macoupin County
- Cairo
- Caledonia
- Calumet City
- Calumet
- Calumet Park
- Camargo
- Camargo Township, Douglas County
- Cambria
- Cambridge
- Cambridge Township, Henry County
- Camden
- Camp Point
- Camp Point Township, Adams County
- Campbell Hill
- Campton
- Canoe Creek
- Canteen
- Canton
- Canton Township, Fulton County
- Capital
- Capron
- Carbon Cliff
- Carbon Hill
- Carbondale
- Carbondale Township, Jackson County
- Carlinville
- Carlinville Township, Macoupin County
- Carlock
- Carlyle
- Carlyle Township, Clinton County
- Carman
- Carmi
- Carmi Township, White County
- Carol Stream
- Carpentersville
- Carrier Mills
- Carrier Mills Township, Saline County
- Carrigan
- Carroll
- Carrollton
- Carrollton Township, Greene County
- Carson
- Carterville
- Carterville Township, Williamson County
- Carthage
- Carthage Township, Hancock County
- Cartwright
- Cary
- Casey
- Casey Township, Clark County
- Caseyville
- Caseyville Township, St. Clair County
- Casner
- Cass
- Catlin
- Catlin Township, Vermilion County
- Cave-In-Rock
- Cave
- Cazenovia
- Cedar
- Cedar Point
- Cedarville
- Central City
- Central
- Centralia
- Centralia Township, Marion County
- Centreville
- Centreville Township, St. Clair County
- Cerro Gordo
- Cerro Gordo Township, Piatt County
- Chadwick
- Chalmers
- Chambersburg
- Champaign City
- Champaign
- Champaign Township, Champaign County
- Chandlerville
- Chandlerville Township, Cass County
- Channahon
- Channahon Township, Will County
- Channel Lake
- Chapin
- Charleston
- Charleston Township, Coles County
- Chatham
- Chatham Township, Sangamon County
- Chatsworth
- Chatsworth Township, Livingston County
- Chebanse
- Chebanse Township, Iroquois County
- Chemung
- Cheney's Grove
- Chenoa
- Chenoa Township, McLean County
- Cherry Grove-Shannon
- Cherry
- Cherry Valley
- Cherry Valley Township, Winnebago County
- Chester
- Chester Township, Logan County
- Chesterfield
- Chestnut
- Chicago Heights
- Chicago
- Chicago Ridge
- Chili
- Chillicothe
- Chillicothe Township, Peoria County
- China
- Chouteau
- Chrisman
- Christopher
- Christy
- Cicero
- Cicero Township, Cook County
- Cincinnati
- Cisco
- Cisne
- Cissna Park
- Claremont
- Clarendon Hills
- Clarion
- Clarksburg
- Clay City
- Clay City Township, Clay County
- Clayton
- Clayton Township, Adams County
- Clayton Township, Woodford County
- Clear Lake
- Clear Lake Township, Sangamon County
- Clement
- Cleveland
- Clifton
- Clinton
- Clinton Township, DeKalb County
- Clintonia
- Clover
- Clyde
- Coal City
- Coal Valley
- Coal Valley Township, Rock Island County
- Coalton
- Cobden
- Coe
- Coffeen
- Colchester
- Colchester Township, McDonough County
- Cold Spring
- Coldbrook
- Colfax
- Colfax Township, Champaign County
- Collinsville
- Collinsville Township, Madison County
- Coloma
- Colona
- Colona Township, Henry County
- Columbia
- Columbus
- Compromise
- Compton
- Concord Township, Adams County
- Concord Township, Bureau County
- Concord Township, Iroquois County
- Condit
- Congerville
- Cooper
- Cooperstown
- Copley
- Coral
- Cordova
- Cordova Township, Rock Island County
- Corinth
- Cornell
- Cornwall
- Cortland
- Cortland Township, DeKalb County
- Corwin
- Cottage
- Cotton Hill
- Cottonwood
- Coulterville
- Council Hill
- Country Club Hills
- Countryside
- Covington
- Cowden
- Coyne Center
- Crab Orchard
- Crainville
- Crane Creek
- Creal Springs
- Creal Springs Township, Williamson County
- Creek
- Crescent City
- Crescent
- Crest Hill
- Creston
- Crestwood
- Crete
- Crete Township, Will County
- Creve Coeur
- Crittenden
- Crook
- Crooked Creek Township, Cumberland County
- Crooked Creek Township, Jasper County
- Cropsey
- Crossville
- Crouch
- Cruger
- Crystal Lake
- Crystal Lawns
- Cuba
- Cuba Township, Lake County
- Cullom
- Cunningham
- Curran
- Custer
- Cutler
- Cypress
- Dahlgren
- Dahlgren Township, Hamilton County
- Dakota
- Dakota Township, Stephenson County
- Dale
- Dallas City
- Dallas City Township, Hancock County
- Dalton City
- Dalzell
- Damiansville
- Danforth
- Danforth Township, Iroquois County
- Danvers
- Danvers Township, McLean County
- Danville
- Danville Township, Vermilion County
- Darien
- Darwin
- Davis
- Davis Junction
- Dawson
- Dawson Township, McLean County
- Dayton
- DeKalb
- DeKalb Township, DeKalb County
- De Land
- De Pue
- De Soto
- De Soto Township, Jackson County
- De Witt
- Decatur
- Decatur Township, Macon County
- Decker
- Deer Creek
- Deer Creek Township, Tazewell County
- Deer Park
- Deer Park Township, La Salle County
- Deerfield
- Deerfield Township, Fulton County
- Degognia
- Delavan
- Delavan Township, Tazewell County
- Dement
- Denison
- Denning
- Denver
- Derinda
- Derry
- Des Plaines
- Detroit
- Diamond
- Dieterich
- Dillon
- Dimmick
- Divernon
- Divernon Township, Sangamon County
- Dix
- Dix Township, Ford County
- Dixmoor
- Dixon
- Dixon Township, Lee County
- Dodds
- Dolson
- Dolton
- Dongola
- Donovan
- Dora
- Dorchester
- Dorr
- Douglas Township, Effingham County
- Douglas Township, Iroquois County
- Dover
- Dowell
- Downers Grove
- Downers Grove Township, DuPage County
- Downs
- Downs Township, McLean County
- Drummer
- Drury
- Dry Grove
- Dry Point
- Du Bois
- Du Page
- Du Quoin
- Duncan
- Dundee
- Dunfermline
- Dunham
- Dunlap
- Dunleith
- Dupo
- Durand
- Durand Township, Winnebago County
- Durham
- Dwight
- Dwight Township, Livingston County
- Eagle Creek
- Eagle
- Eagle Point
- Earl
- Earlville
- East Alton
- East Bend
- East Cape Girardeau
- East Dubuque
- East Dundee
- East Eldorado
- East Fork Township, Clinton County
- East Fork Township, Montgomery County
- East Galena
- East Galesburg
- East Grove
- East Hazel Crest
- East Lincoln
- East Marion
- East Moline
- East Nelson
- East Oakland
- East Peoria
- East St. Louis
- East St. Louis Township, St. Clair County
- Eastern
- Easton
- Eddyville
- Eden
- Edford
- Edgar
- Edgewood
- Edgington
- Edinburg
- Edwardsville
- Edwardsville Township, Madison County
- Effingham
- El Paso
- El Paso Township, Woodford County
- Ela
- Elba
- Elbridge
- Elburn
- Eldorado
- Eldorado Township, McDonough County
- Elgin
- Elgin Township, Kane County
- Eliza
- Elizabeth
- Elizabeth Township, Jo Daviess County
- Elizabethtown
- Elk Grove
- Elk Grove Village
- Elk
- Elk Prairie
- Elkhart
- Elkhart Township, Logan County
- Elkhorn Grove
- Elkhorn
- Elkville
- Ellington
- Elliott
- Ellis Grove
- Ellison
- Ellisville
- Ellsworth
- Elm Grove
- Elm River
- Elmhurst
- Elmira
- Elmwood
- Elmwood Park
- Elmwood Township, Peoria County
- Elsah
- Elsah Township, Jersey County
- Elwood
- Elwood Township, Vermilion County
- Embarrass
- Emden
- Eminence
- Emma
- Emmet
- Empire
- Energy
- Enfield
- Enfield Township, White County
- Engelmann
- English
- Eppards Point
- Equality
- Equality Township, Gallatin County
- Erie
- Erie Township, Whiteside County
- Erienna
- Erin
- Esmen
- Essex
- Essex Township, Kankakee County
- Essex Township, Stark County
- Eureka
- Evans
- Evanston
- Evanston Township, Cook County
- Evansville
- Evergreen Park
- Ewing
- Ewing Township, Franklin County
- Fairbury
- Fairfield
- Fairfield Township, Bureau County
- Fairhaven
- Fairmont City
- Fairmont
- Fairmount
- Fairmount Township, Pike County
- Fairview Heights
- Fairview
- Fairview Township, Fulton County
- Fall Creek
- Fall River
- Fancy Creek
- Farina
- Farm Ridge
- Farmer City
- Farmers
- Farmersville
- Farmington
- Farmington Township, Fulton County
- Farrington
- Fayette
- Fayetteville
- Fayetteville Township, St. Clair County
- Felix
- Fenton
- Fidelity
- Field
- Fieldon
- Fillmore
- Fillmore Township, Montgomery County
- Findlay
- Fisher
- Fithian
- Flagg
- Flanagan
- Flannigan
- Flat Branch
- Flat Rock
- Flora
- Flora Township, Boone County
- Florence Township, Stephenson County
- Florence Township, Will County
- Flossmoor
- Floyd
- Fondulac
- Ford Heights
- Forest City
- Forest City Township, Mason County
- Forest Lake
- Forest Park
- Forest View
- Forrest
- Forrest Township, Livingston County
- Forreston
- Forreston Township, Ogle County
- Forsyth
- Fort Russell
- Foster Township, Madison County
- Foster Township, Marion County
- Fountain Bluff
- Fountain Creek
- Fountain Green
- Four Mile
- Fox Lake Hills
- Fox Lake
- Fox River Grove
- Fox River Valley Gardens
- Fox Township, Jasper County
- Fox Township, Kendall County
- Frankfort
- Frankfort Square
- Frankfort Township, Franklin County
- Frankfort Township, Will County
- Franklin Grove
- Franklin
- Franklin Park
- Franklin Township, DeKalb County
- Frederick
- Freeburg
- Freeburg Township, St. Clair County
- Freedom Township, Carroll County
- Freedom Township, La Salle County
- Freeman Spur
- Freeport
- Freeport Township, Stephenson County
- Fremont
- Friends Creek
- Fulton
- Fulton Township, Whiteside County
- Fults
- Funks Grove
- Gages Lake
- Galatia
- Galatia Township, Saline County
- Galena
- Galesburg City
- Galesburg
- Galesburg Township, Knox County
- Galva
- Galva Township, Henry County
- Ganeer
- Garden Plain
- Gardner
- Gardner Township, Sangamon County
- Garfield
- Garrett
- Gays
- Genesee
- Geneseo
- Geneseo Township, Henry County
- Geneva
- Geneva Township, Kane County
- Genoa
- Genoa Township, DeKalb County
- Georgetown
- Georgetown Township, Vermilion County
- German
- German Valley
- Germantown Hills
- Germantown
- Germantown Township, Clinton County
- Gibson City
- Gifford
- Gilberts
- Gillespie
- Gillespie Township, Macoupin County
- Gilman
- Gilmer
- Girard
- Girard Township, Macoupin County
- Gladstone
- Gladstone Township, Henderson County
- Glasford
- Glen Carbon
- Glen Ellyn
- Glencoe
- Glendale Heights
- Glenview
- Glenwood
- Godfrey
- Godfrey Township, Madison County
- Godley
- Golconda
- Gold Hill
- Gold
- Golden
- Golf
- Good Hope
- Goode
- Goodfarm
- Goodfield
- Goodings Grove
- Goose Creek
- Goose Lake
- Goreville
- Gorham
- Goshen
- Grafton
- Grafton Township, McHenry County
- Grand Detour
- Grand Prairie
- Grand Rapids
- Grand Ridge
- Grand Tower
- Grand Tower Township, Jackson County
- Grandview
- Grandview Township, Edgar County
- Grandville
- Grandwood Park
- Granite City
- Granite City Township, Madison County
- Grant Park
- Grant Township, Lake County
- Grant Township, Vermilion County
- Grantfork
- Granville
- Granville Township, Putnam County
- Grassy
- Gray
- Grayslake
- Grayville
- Green Garden
- Green Oaks
- Green Valley
- Greenbush
- Greene Township, Mercer County
- Greene Township, Woodford County
- Greenfield
- Greenfield Township, Grundy County
- Greenup
- Greenup Township, Cumberland County
- Greenview
- Greenville
- Greenville Township, Bureau County
- Greenwood
- Greenwood Township, Christian County
- Greenwood Township, McHenry County
- Gridley
- Gridley Township, McLean County
- Griggsville
- Griggsville Township, Pike County
- Grisham
- Grove
- Groveland Township, La Salle County
- Groveland Township, Tazewell County
- Grover
- Guilford
- Gurnee
- Hadley
- Hagener
- Hahnaman
- Haines
- Hainesville
- Hale
- Hall
- Hallock
- Hamburg
- Hamel
- Hamel Township, Madison County
- Hamilton
- Hamilton Township, Lee County
- Hammond
- Hampshire
- Hampshire Township, Kane County
- Hampton
- Hampton Township, Rock Island County
- Hancock
- Hanna City
- Hanna
- Hanover
- Hanover Park
- Hanover Township, Cook County
- Hanover Township, Jo Daviess County
- Hardin
- Hardin Township, Pike County
- Harlem Township, Stephenson County
- Harlem Township, Winnebago County
- Harmon
- Harmony
- Harp
- Harris
- Harrisburg
- Harrisburg Township, Saline County
- Harrison
- Harristown
- Harristown Township, Macon County
- Harter
- Hartford
- Hartland
- Hartsburg
- Harvard
- Harvel
- Harvey
- Harwood Heights
- Harwood
- Havana
- Havana Township, Mason County
- Haw Creek
- Hawthorn Woods
- Hawthorne
- Hazel Crest
- Hebron
- Hebron Township, McHenry County
- Hecker
- Helvetia
- Henderson
- Henderson Township, Knox County
- Hennepin
- Hennepin Township, Putnam County
- Henry
- Henry Township, Marshall County
- Hensley
- Heralds Prairie
- Herrick
- Herrick Township, Shelby County
- Herrin
- Herrin Township, Williamson County
- Herscher
- Heyworth
- Hickory Hill
- Hickory Hills
- Hickory
- Hickory Point
- Highland
- Highland Park
- Highland Township, Grundy County
- Highwood
- Hillcrest
- Hillsboro
- Hillsboro Township, Montgomery County
- Hillsdale
- Hillside
- Hillyard
- Hinckley
- Hindsboro
- Hinsdale
- Hire
- Hittle
- Hodgkins
- Hoffman Estates
- Hoffman
- Holiday Hills
- Holland
- Hollis
- Homer
- Homer Township, Will County
- Hometown
- Homewood
- Honey Creek Township, Adams County
- Honey Creek Township, Crawford County
- Honey Point
- Hoopeston
- Hoosier
- Hope
- Hopedale
- Hopedale Township, Tazewell County
- Hopewell
- Hopewell Township, Marshall County
- Hopkins
- Hopkins Park
- Houston
- Hoyleton
- Hoyleton Township, Washington County
- Hudson
- Hudson Township, McLean County
- Hull
- Humboldt
- Humboldt Township, Coles County
- Hume
- Hume Township, Whiteside County
- Hunt City
- Hunter
- Huntley
- Huntsville
- Hurlbut
- Hurricane
- Hurst
- Hutsonville
- Hutsonville Township, Crawford County
- Hutton
- Illini
- Illiopolis
- Illiopolis Township, Sangamon County
- Ina
- Independence
- Indian Creek
- Indian Grove
- Indian Head Park
- Indian Point
- Indian Prairie
- Indiantown
- Industry
- Industry Township, McDonough County
- Ingalls Park
- Inverness
- Ipava
- Irishtown
- Iroquois
- Irving
- Irving Township, Montgomery County
- Irvington
- Irvington Township, Washington County
- Isabel
- Island Grove
- Island Lake
- Itasca
- Iuka
- Iuka Township, Marion County
- Ivesdale
- Jackson Township, Effingham County
- Jackson Township, Will County
- Jacksonville
- Jamaica
- Jarvis
- Jasper
- Jefferson
- Jeffersonville
- Jerome
- Jersey
- Jerseyville
- Johannisburg
- Johnsburg
- Johnson Township, Christian County
- Johnson Township, Clark County
- Johnston City
- Joliet
- Joliet Township, Will County
- Jonathan Creek
- Jonesboro
- Joppa
- Jordan
- Joshua
- Joy
- Jubilee
- Junction City
- Justice
- Kampsville
- Kane
- Kane Township, Greene County
- Kaneville
- Kangley
- Kankakee
- Kankakee Township, Kankakee County
- Kansas
- Kansas Township, Edgar County
- Kansas Township, Woodford County
- Karnak
- Kaskaskia
- Keene
- Keensburg
- Keith
- Keithsburg
- Keithsburg Township, Mercer County
- Kelly
- Kempton
- Kendall
- Kenilworth
- Kenney
- Kent
- Kerr
- Kewanee
- Kewanee Township, Henry County
- Keyesport
- Kickapoo
- Kilbourne
- Kilbourne Township, Mason County
- Kildeer
- Kincaid
- Kinderhook
- Kinderhook Township, Pike County
- King
- Kingston
- Kingston Township, DeKalb County
- Kinkaid
- Kinmundy
- Kinmundy Township, Marion County
- Kirkland
- Kirkwood
- Knight Prairie
- Knox
- Knoxville
- LaSalle
- La Clede
- La Grange
- La Grange Park
- La Harpe
- La Harpe Township, Hancock County
- La Moille
- La Moille Township, Bureau County
- La Prairie
- La Salle
- Lacon
- Lacon Township, Marshall County
- Ladd
- Laenna
- Lafayette Township, Coles County
- Lafayette Township, Ogle County
- Lagrange
- Lake Barrington
- Lake Bluff
- Lake Catherine
- Lake Creek
- Lake Forest
- Lake
- Lake Summerset
- Lake Villa
- Lake Villa Township, Lake County
- Lake Zurich
- Lake in the Hills
- Lake of the Woods
- Lakemoor
- Lakewood
- Lakewood Shores
- Lakewood Township, Shelby County
- Lamard
- Lamoine
- Lamotte
- Lanark
- Lancaster
- Lanesville
- Lansing
- Laona
- Larkinsburg
- Latham
- Lawndale
- Lawrence
- Lawrenceville
- LeRoy
- Le Roy
- Leaf River
- Leaf River Township, Ogle County
- Lebanon
- Lebanon Township, St. Clair County
- Lee Center
- Lee
- Lee Township, Brown County
- Lee Township, Fulton County
- Leech
- Leef
- Leepertown
- Leland Grove
- Leland
- Lemont
- Lemont Township, Cook County
- Lena
- Lenox
- Lenzburg
- Lenzburg Township, St. Clair County
- Lerna
- Levan
- Lewistown
- Lewistown Township, Fulton County
- Lexington
- Lexington Township, McLean County
- Leyden
- Liberty
- Liberty Township, Adams County
- Liberty Township, Effingham County
- Libertyville
- Libertyville Township, Lake County
- Licking
- Lily Lake
- Lima
- Limestone Township, Kankakee County
- Limestone Township, Peoria County
- Lincoln
- Lincoln Township, Ogle County
- Lincolnshire
- Lincolnwood
- Lindenhurst
- Linder
- Linn
- Lisbon
- Lisle
- Lisle Township, DuPage County
- Litchfield
- Little Mackinaw
- Little Rock
- Little York
- Littleton
- Lively Grove
- Liverpool
- Livingston
- Loami
- Loami Township, Sangamon County
- Lockport
- Lockport Township, Will County
- Locust
- Loda
- Loda Township, Iroquois County
- Logan
- Lomax
- Lomax Township, Henderson County
- Lombard
- London Mills
- Lone Grove
- Long Creek
- Long Creek Township, Macon County
- Long Grove
- Long Lake
- Long Point
- Long Point Township, Livingston County
- Looking Glass
- Loraine
- Loraine Township, Henry County
- Loran
- Lostant
- Loudon
- Louisville
- Louisville Township, Clay County
- Love
- Lovejoy
- Loves Park
- Lovington
- Lovington Township, Moultrie County
- Lowe
- Lucas
- Ludlow
- Ludlow Township, Champaign County
- Lukin
- Lyman
- Lynchburg
- Lyndon
- Lyndon Township, Whiteside County
- Lynn Township, Henry County
- Lynn Township, Knox County
- Lynnville
- Lynwood
- Lyons
- Lyons Township, Cook County
- Machesney Park
- Mackinaw
- Mackinaw Township, Tazewell County
- Macomb City
- Macomb
- Macomb Township, McDonough County
- Macon
- Macon Township, Bureau County
- Madison
- Madison Township, Richland County
- Magnolia
- Magnolia Township, Putnam County
- Mahomet
- Mahomet Township, Champaign County
- Maine Township, Cook County
- Maine Township, Grundy County
- Makanda
- Makanda Township, Jackson County
- Malden
- Malone
- Malta
- Malta Township, DeKalb County
- Manchester
- Manchester Township, Boone County
- Manhattan
- Manhattan Township, Will County
- Manito
- Manito Township, Mason County
- Manlius
- Manlius Township, Bureau County
- Manlius Township, La Salle County
- Mansfield
- Manteno
- Manteno Township, Kankakee County
- Maple Park
- Maquon
- Maquon Township, Knox County
- Marengo
- Marengo Township, McHenry County
- Marine
- Marine Township, Madison County
- Marion
- Marion Township, Lee County
- Marion Township, Ogle County
- Marissa
- Marissa Township, St. Clair County
- Mark
- Markham
- Maroa
- Maroa Township, Macon County
- Marquette Heights
- Marrowbone
- Marseilles
- Marshall
- Marshall Township, Clark County
- Martin Township, Crawford County
- Martin Township, McLean County
- Martinsburg
- Martinsville
- Martinsville Township, Clark County
- Martinton
- Martinton Township, Iroquois County
- Maryland
- Maryville
- Mascoutah
- Mascoutah Township, St. Clair County
- Mason City
- Mason City Township, Mason County
- Mason
- Mason Township, Effingham County
- Massilon
- Matherville
- Matteson
- Mattoon
- Mattoon Township, Coles County
- Maxwell
- May Township, Christian County
- May Township, Lee County
- Mayberry
- Mayfield
- Maywood
- Mazon
- Mazon Township, Grundy County
- McClellan
- McCullom Lake
- McHenry
- McHenry Township, McHenry County
- McKee
- McKendree
- McLean
- McLeansboro
- McLeansboro Township, Hamilton County
- McNabb
- Meacham
- Mechanicsburg
- Mechanicsburg Township, Sangamon County
- Media
- Medina
- Medora
- Melrose Park
- Melrose Township, Adams County
- Melrose Township, Clark County
- Melvin
- Mendon
- Mendon Township, Adams County
- Mendota
- Mendota Township, La Salle County
- Menominee
- Mercer
- Meredosia
- Meriden
- Meridian
- Merrionette Park
- Metamora
- Metamora Township, Woodford County
- Metropolis
- Mettawa
- Middlefork
- Middleport
- Middletown
- Midlothian
- Milan
- Milan Township, DeKalb County
- Milford
- Milford Township, Iroquois County
- Milks Grove
- Mill Shoals
- Millbrook
- Milledgeville
- Miller
- Millersburg
- Millington
- Mills
- Millstadt
- Millstadt Township, St. Clair County
- Milo
- Milton
- Milton Township, DuPage County
- Mineral
- Mineral Township, Bureau County
- Minier
- Minonk
- Minonk Township, Woodford County
- Minooka
- Mission
- Mississippi
- Moccasin
- Modesto
- Mokena
- Moline
- Moline Township, Rock Island County
- Momence
- Momence Township, Kankakee County
- Mona
- Monee
- Monee Township, Will County
- Money Creek
- Monmouth
- Monmouth Township, Warren County
- Monroe
- Montebello
- Montezuma
- Montgomery
- Montgomery Township, Crawford County
- Montgomery Township, Woodford County
- Monticello
- Monticello Township, Piatt County
- Montmorency
- Moores Prairie
- Moraine
- Morgan
- Moro
- Morris
- Morris Township, Grundy County
- Morrison
- Morrisonville
- Morton Grove
- Morton
- Morton Township, Tazewell County
- Mosquito
- Mound City
- Mound Township, Effingham County
- Mound Township, McDonough County
- Mounds
- Mount Auburn
- Mount Auburn Township, Christian County
- Mount Carmel
- Mount Carroll
- Mount Carroll Township, Carroll County
- Mount Clare
- Mount Erie
- Mount Hope
- Mount Morris
- Mount Morris Township, Ogle County
- Mount Olive
- Mount Olive Township, Macoupin County
- Mount Pleasant
- Mount Prospect
- Mount Pulaski
- Mount Pulaski Township, Logan County
- Mount Sterling
- Mount Sterling Township, Brown County
- Mount Vernon
- Mount Vernon Township, Jefferson County
- Mount Zion
- Mount Zion Township, Macon County
- Mountain
- Moweaqua
- Moweaqua Township, Shelby County
- Mulberry Grove
- Mulberry Grove Township, Bond County
- Mundelein
- Munson
- Murdock
- Murphysboro
- Murphysboro Township, Jackson County
- Murrayville
- Na-Au-Say
- Nachusa
- Nameoki
- Naperville
- Naperville Township, DuPage County
- Naplate
- Nashville
- Nashville Township, Washington County
- Nauvoo
- Nauvoo Township, Hancock County
- Nebo
- Nebraska
- Nelson
- Neoga
- Neoga Township, Cumberland County
- Neponset
- Neponset Township, Bureau County
- Nettle Creek
- Nevada
- New Athens
- New Athens Township, St. Clair County
- New Baden
- New Berlin
- New Berlin Township, Sangamon County
- New Boston
- New Boston Township, Mercer County
- New Burnside
- New Canton
- New Douglas
- New Douglas Township, Madison County
- New Haven
- New Haven Township, Gallatin County
- New Holland
- New Lenox
- New Lenox Township, Will County
- New Milford
- New Salem Township, McDonough County
- New Salem Township, Pike County
- New Trier
- Newark
- Newburg
- Newcomb
- Newell
- Newman
- Newman Township, Douglas County
- Newport
- Newton
- Newton Township, Whiteside County
- Newtown
- Niantic
- Niantic Township, Macon County
- Niles
- Niles Township, Cook County
- Nilwood
- Nilwood Township, Macoupin County
- Nixon
- Noble
- Noble Township, Richland County
- Nokomis
- Nokomis Township, Montgomery County
- Nora
- Normal
- Normal Township, McLean County
- Norman
- Norridge
- Norris City
- North Aurora
- North Barrington
- North Chicago
- North City
- North Fork
- North Henderson
- North Litchfield
- North Muddy
- North Okaw
- North Otter
- North Palmyra
- North Pekin
- North Riverside
- North Utica
- Northbrook
- Northeast
- Northern
- Northfield
- Northfield Township, Cook County
- Northlake
- Northville
- Norton
- Norwood
- Norwood Park
- Nunda
- O'Fallon
- O'Fallon Township, St. Clair County
- Oak Brook
- Oak Forest
- Oak Grove
- Oak Lawn
- Oak Park
- Oak Park Township, Cook County
- Oakbrook Terrace
- Oakdale
- Oakford
- Oakland
- Oakley
- Oakwood Hills
- Oakwood
- Oakwood Township, Vermilion County
- Oblong
- Oblong Township, Crawford County
- Oconee
- Odell
- Odell Township, Livingston County
- Odin
- Odin Township, Marion County
- Ogden
- Ogden Township, Champaign County
- Oglesby
- Ohio Grove
- Ohio
- Ohio Township, Bureau County
- Okaw
- Okawville
- Okawville Township, Washington County
- Old Mill Creek
- Old Ripley
- Old Shawneetown
- Oldtown
- Olio
- Olive
- Olmsted
- Olney
- Olney Township, Richland County
- Olympia Fields
- Omaha
- Omaha Township, Gallatin County
- Omega
- Omphghent
- Onarga
- Onarga Township, Iroquois County
- Oneco
- Oneida
- Ontario
- Ophir
- Oquawka
- Oquawka Township, Henderson County
- Ora
- Oran
- Orange Township, Clark County
- Orange Township, Knox County
- Orangeville
- Orchard
- Oreana
- Oregon-Nashua
- Oregon
- Orel
- Orient
- Orion
- Orion Township, Fulton County
- Orland Hills
- Orland
- Orland Park
- Orvil
- Osage
- Osceola
- Osco
- Oskaloosa
- Oswego
- Oswego Township, Kendall County
- Otego
- Ottawa
- Ottawa Township, La Salle County
- Otter Creek Township, Jersey County
- Otter Creek Township, La Salle County
- Otto
- Owaneco
- Owego
- Owen
- Oxford
- Palatine
- Palatine Township, Cook County
- Palestine
- Palestine Township, Woodford County
- Palmyra
- Palmyra Township, Lee County
- Palos Heights
- Palos Hills
- Palos
- Palos Park
- Pana
- Pana Township, Christian County
- Panama
- Panola
- Panther Creek
- Papineau
- Paradise
- Paris
- Paris Township, Edgar County
- Park City
- Park Forest
- Park Ridge
- Parker
- Partridge
- Patoka
- Patoka Township, Marion County
- Patterson
- Patton
- Paw Paw
- Paw Paw Township, DeKalb County
- Pawnee
- Pawnee Township, Sangamon County
- Paxton
- Payson
- Payson Township, Adams County
- Pea Ridge
- Peach Orchard
- Pearl City
- Pearl
- Pecatonica
- Pecatonica Township, Winnebago County
- Pekin
- Pekin Township, Tazewell County
- Pella
- Pembroke
- Pendleton
- Penn
- Pennsylvania
- Peoria City
- Peoria Heights
- Peoria
- Peotone
- Peotone Township, Will County
- Percy
- Perry
- Perry Township, Pike County
- Perryton
- Persifer
- Peru
- Peru Township, La Salle County
- Pesotum
- Pesotum Township, Champaign County
- Petersburg
- Petty
- Phenix
- Philadelphia
- Phillips
- Philo
- Philo Township, Champaign County
- Phoenix
- Piasa
- Pickaway
- Pierce
- Pierron
- Pigeon Grove
- Pike
- Pilot Grove
- Pilot Knob
- Pilot Township, Kankakee County
- Pilot Township, Vermilion County
- Pin Oak
- Pinckneyville
- Pine Creek
- Pine Rock
- Piper City
- Pistakee Highlands
- Pitman
- Pittsburg
- Pittsfield
- Pittsfield Township, Pike County
- Pixley
- Plainfield
- Plainfield Township, Will County
- Plano
- Plato
- Pleasant Grove
- Pleasant Hill
- Pleasant Hill Township, Pike County
- Pleasant
- Pleasant Mound
- Pleasant Plains
- Pleasant Ridge
- Pleasant Vale
- Pleasant Valley
- Pleasant View
- Plum Hill
- Plymouth
- Pocahontas
- Point Pleasant
- Polk
- Polo
- Pomona
- Pontiac
- Pontiac Township, Livingston County
- Pontoon Beach
- Pontoosuc
- Pope
- Poplar Grove
- Poplar Grove Township, Boone County
- Port Byron
- Port Byron Township, Rock Island County
- Portland
- Posen
- Potomac
- Prairie City
- Prairie City Township, McDonough County
- Prairie Creek
- Prairie Du Long
- Prairie Green
- Prairie Grove
- Prairie Township, Crawford County
- Prairie Township, Edgar County
- Prairie Township, Hancock County
- Prairie Township, Shelby County
- Prairie du Rocher
- Prairieton
- Preemption
- Preston Heights
- Preston
- Princeton
- Princeton Township, Bureau County
- Princeville
- Princeville Township, Peoria County
- Prophetstown
- Prophetstown Township, Whiteside County
- Prospect Heights
- Proviso
- Pulaski
- Putman
- Quarry
- Quincy
- Quincy Township, Adams County
- Quiver
- Raccoon
- Radnor
- Radom
- Raleigh
- Raleigh Township, Saline County
- Ramsey
- Ramsey Township, Fayette County
- Randolph
- Rankin
- Ransom
- Rantoul
- Rantoul Township, Champaign County
- Rapids City
- Raritan
- Rawlins
- Raymond
- Raymond Township, Champaign County
- Raymond Township, Montgomery County
- Reading
- Red Bud
- Reddick
- Reed
- Reynolds
- Reynolds Township, Lee County
- Rice
- Rich
- Richfield
- Richland Grove
- Richland Township, La Salle County
- Richland Township, Marshall County
- Richland Township, Shelby County
- Richmond
- Richmond Township, McHenry County
- Richton Park
- Richview
- Richview Township, Washington County
- Richwood
- Richwoods
- Ricks
- Ridge Farm
- Ridge
- Ridgeland
- Ridgway
- Ridgway Township, Gallatin County
- Ridott
- Riley
- Ringwood
- Rio
- River Forest
- River Forest Township, Cook County
- River Grove
- Riverdale
- Riverside
- Riverside Township, Adams County
- Riverside Township, Cook County
- Riverton
- Riverwoods
- Rivoli
- Roanoke
- Roanoke Township, Woodford County
- Robbins
- Roberts
- Roberts Township, Marshall County
- Robinson
- Robinson Township, Crawford County
- Rochelle
- Rochester
- Rochester Township, Sangamon County
- Rock City
- Rock Creek-Lima
- Rock Creek
- Rock Falls
- Rock Grove
- Rock Island
- Rock Island Township, Rock Island County
- Rock Run
- Rockbridge
- Rockdale
- Rockford
- Rockford Township, Winnebago County
- Rockton
- Rockton Township, Winnebago County
- Rockvale
- Rockville
- Rocky Run
- Rogers
- Rolling Meadows
- Rome
- Rome Township, Jefferson County
- Romeoville
- Romine
- Roodhouse
- Roodhouse Township, Greene County
- Rooks Creek
- Rosamond
- Roscoe
- Roscoe Township, Winnebago County
- Rose
- Rosedale
- Rosefield
- Roselle
- Rosemont
- Roseville
- Roseville Township, Warren County
- Rosewood Heights
- Rosiclare
- Ross Township, Edgar County
- Ross Township, Vermilion County
- Rossville
- Round Grove
- Round Lake Beach
- Round Lake Heights
- Round Lake
- Round Lake Park
- Rountree
- Roxana
- Royal
- Royalton
- Rozetta
- Rubicon
- Ruma
- Rural Township, Rock Island County
- Rural Township, Shelby County
- Rush
- Rushville
- Rushville Township, Schuyler County
- Russell
- Rutland
- Rutland Township, Kane County
- Rutland Township, La Salle County
- Rutledge
- Ruyle
- Sadorus
- Sadorus Township, Champaign County
- Salem
- Salem Township, Carroll County
- Salem Township, Knox County
- Salem Township, Marion County
- Salina
- Saline
- Salt Creek
- San Jose
- Sand Prairie
- Sand Ridge
- Sandoval
- Sandoval Township, Marion County
- Sandwich
- Sandwich Township, DeKalb County
- Sangamon
- Sangamon Valley
- Santa Anna
- Santa Fe
- Saratoga Township, Grundy County
- Saratoga Township, Marshall County
- Sargent
- Sauk Village
- Saunemin
- Saunemin Township, Livingston County
- Savanna
- Savanna Township, Carroll County
- Savoy
- Sawyerville
- Saybrook
- Scales Mound
- Scales Mound Township, Jo Daviess County
- Schaumburg
- Schaumburg Township, Cook County
- Schiller Park
- Schram City
- Sciota
- Scotland
- Scott AFB
- Scott Township, Champaign County
- Scott Township, Ogle County
- Scottville
- Seatonville
- Secor
- Sefton
- Selby
- Seminary
- Senachwine
- Seneca
- Seneca Township, McHenry County
- Serena
- Sesser
- Seven Hickory
- Seward Township, Kendall County
- Seward Township, Winnebago County
- Shabbona
- Shabbona Township, DeKalb County
- Shafter
- Shannon
- Sharon
- Shawnee
- Shawneetown
- Shaws Point
- Sheffield
- Shelbyville
- Shelbyville Township, Shelby County
- Sheldon
- Sheldon Township, Iroquois County
- Sheridan
- Sheridan Township, Logan County
- Sherman
- Sherman Township, Mason County
- Sherrard
- Shields
- Shiloh
- Shiloh Township, Edgar County
- Shiloh Township, Jefferson County
- Shiloh Valley
- Shipman
- Shipman Township, Macoupin County
- Shirland
- Shoal Creek
- Shorewood
- Sibley
- Sidell
- Sidell Township, Vermilion County
- Sidney
- Sidney Township, Champaign County
- Sigel
- Sigel Township, Shelby County
- Silver Creek
- Silvis
- Simpson
- Sims
- Six Mile
- Skokie
- Sleepy Hollow
- Smallwood
- Smithton
- Smithton Township, St. Clair County
- Somer
- Somerset
- Somonauk
- Somonauk Township, DeKalb County
- Songer
- Sonora
- Sorento
- South Barrington
- South Beloit
- South Chicago Heights
- South Crouch
- South Dixon
- South Elgin
- South Fillmore
- South Fork
- South Grove
- South Holland
- South Homer
- South Hurricane
- South Jacksonville
- South Litchfield
- South Macon
- South Moline
- South Muddy
- South Ottawa
- South Otter
- South Palmyra
- South Pekin
- South Rock Island
- South Ross
- South Roxana
- South Twigg
- South Wheatland
- South Wilmington
- Southern
- Southern View
- Sparland
- Sparta
- Sparta Township, Knox County
- Spaulding
- Spring Bay
- Spring Bay Township, Woodford County
- Spring Creek
- Spring Garden
- Spring Grove
- Spring Grove Township, Warren County
- Spring
- Spring Lake
- Spring Point
- Spring Valley
- Springfield
- Springfield Township, Sangamon County
- Squaw Grove
- St. Albans
- St. Anne
- St. Anne Township, Kankakee County
- St. Charles
- St. Charles Township, Kane County
- St. Clair
- St. David
- St. Elmo
- St. Francis
- St. Francisville
- St. Jacob
- St. Jacob Township, Madison County
- St. Joseph
- St. Joseph Township, Champaign County
- St. Libory
- St. Mary
- St. Peter
- St. Rose
- Standard
- Stanford
- Stanford Township, Clay County
- Stanton
- Staunton
- Staunton Township, Macoupin County
- Ste. Marie
- Ste. Marie Township, Jasper County
- Steeleville
- Steger
- Sterling
- Sterling Township, Whiteside County
- Steuben
- Stevenson
- Steward
- Stewardson
- Stickney
- Stickney Township, Cook County
- Stillman Valley
- Stites
- Stockland
- Stockton
- Stockton Township, Jo Daviess County
- Stone Park
- Stonefort
- Stonefort Township, Saline County
- Stonefort Township, Williamson County
- Stonington
- Stonington Township, Christian County
- Stookey
- Strasburg
- Stratton
- Streamwood
- Streator
- Stronghurst
- Stronghurst Township, Henderson County
- Sublette
- Sublette Township, Lee County
- Suez
- Sugar Creek
- Sugar Grove
- Sugar Grove Township, Kane County
- Sugar Loaf
- Sullivan
- Sullivan Township, Livingston County
- Sullivan Township, Moultrie County
- Sullivant
- Summerfield
- Summit
- Summit Township, Effingham County
- Sumner
- Sumner Township, Kankakee County
- Sumner Township, Warren County
- Sumpter
- Sun River Terrace
- Sunbury
- Swan
- Swansea
- Sycamore
- Sycamore Township, DeKalb County
- Symmes
- Table Grove
- Talkington
- Tallula
- Tamalco
- Tamaroa
- Tamms
- Tampico
- Tampico Township, Whiteside County
- Tate
- Taylor
- Taylor Springs
- Taylorville
- Taylorville Township, Christian County
- Tennessee
- Terre Haute
- Teutopolis
- Teutopolis Township, Effingham County
- Texas
- Thayer
- Thebes
- Third Lake
- Thomasboro
- Thompson
- Thompsonville
- Thomson
- Thornton
- Thornton Township, Cook County
- Tilden
- Tilton
- Timber
- Tinley Park
- Tiskilwa
- Todds Point
- Toledo
- Tolono
- Tolono Township, Champaign County
- Toluca
- Tompkins
- Tonica
- Tonti
- Toulon
- Toulon Township, Stark County
- Tovey
- Towanda
- Towanda Township, McLean County
- Tower Hill
- Tower Hill Township, Shelby County
- Tower Lakes
- Tremont
- Tremont Township, Tazewell County
- Trenton
- Trivoli
- Trout Valley
- Troy Grove
- Troy Grove Township, La Salle County
- Troy
- Troy Township, Will County
- Truro
- Tunbridge
- Tuscola
- Tuscola Township, Douglas County
- Twigg
- Tyrone
- Ullin
- Union Grove
- Union
- Union Township, Cumberland County
- Union Township, Effingham County
- Union Township, Fulton County
- Union Township, Livingston County
- Unity
- University Park
- Urbana
- Urbana Township, Champaign County
- Ursa
- Ursa Township, Adams County
- Ustick
- Utica
- Valier
- Valley
- Valmeyer
- Vance
- Vandalia
- Vandalia Township, Fayette County
- Varna
- Venedy
- Venetian Village
- Venice
- Venice Township, Madison County
- Vergennes
- Vergennes Township, Jackson County
- Vermillion
- Vermont
- Vermont Township, Fulton County
- Vernon Hills
- Vernon
- Verona
- Versailles
- Versailles Township, Brown County
- Victor
- Victoria
- Victoria Township, Knox County
- Vienna
- Vienna Township, Grundy County
- Villa Grove
- Villa Park
- Vinegar Hill
- Viola
- Viola Township, Lee County
- Virden
- Virden Township, Macoupin County
- Virgil
- Virginia
- Virginia Township, Cass County
- Wabash
- Waddams
- Wade Township, Clinton County
- Wade Township, Jasper County
- Wadsworth
- Waggoner
- Waldo
- Walker
- Walkerville
- Wall
- Wallace
- Walnut Grove Township, Knox County
- Walnut Grove Township, McDonough County
- Walnut
- Walnut Township, Bureau County
- Walshville
- Waltham
- Waltonville
- Wamac
- Wapella
- Wapella Township, De Witt County
- Wards Grove
- Warren
- Warren Township, Jo Daviess County
- Warren Township, Lake County
- Warrensburg
- Warrenville
- Warsaw
- Warsaw Township, Hancock County
- Washburn
- Washington
- Washington Park
- Washington Township, Carroll County
- Washington Township, Tazewell County
- Washington Township, Will County
- Wataga
- Waterford
- Waterloo
- Waterman
- Watseka
- Watson
- Watson Township, Effingham County
- Wauconda
- Wauconda Township, Lake County
- Waukegan
- Waukegan Township, Lake County
- Wauponsee
- Waverly
- Wayne City
- Wayne
- Wayne Township, DuPage County
- Waynesville
- Waynesville Township, De Witt County
- Webber
- Weldon
- Weller
- Wellington
- Wenona
- Wesley
- West Chicago
- West City
- West Deerfield
- West Dundee
- West Frankfort
- West Galena
- West Jersey
- West Lincoln
- West Marion
- West Peoria
- West Peoria Township, Peoria County
- West Point
- West Salem
- West Township, Effingham County
- West Township, McLean County
- Westchester
- Western
- Western Mound
- Western Springs
- Westfield
- Westfield Township, Bureau County
- Westfield Township, Clark County
- Westmont
- Westville
- Wethersfield
- Wheatfield
- Wheatland Township, Fayette County
- Wheatland Township, Will County
- Wheaton
- Wheeling
- Wheeling Township, Cook County
- White Hall
- White Hall Township, Greene County
- White Oak
- White Rock
- Whiteash
- Whitefield
- Whitley
- Whitmore
- Wilberton
- Will
- Williams
- Williamsfield
- Williamsville
- Willisville
- Willow Branch
- Willow Creek
- Willow Hill
- Willow Hill Township, Jasper County
- Willow Springs
- Wilmette
- Wilmington
- Wilmington Township, Will County
- Wilson
- Wilsonville
- Wilton
- Winchester
- Windsor Township, Shelby County
- Winfield
- Winfield Township, DuPage County
- Winnebago
- Winnebago Township, Winnebago County
- Winnetka
- Winslow
- Winslow Township, Stephenson County
- Winthrop Harbor
- Witt
- Witt Township, Montgomery County
- Wood Dale
- Wood River
- Wood River Township, Madison County
- Woodbine
- Woodbury
- Woodhull
- Woodland
- Woodland Township, Carroll County
- Woodland Township, Fulton County
- Woodlawn
- Woodridge
- Woodside
- Woodson
- Woodstock
- Woodstock Township, Schuyler County
- Woodville
- Woosung
- Worden
- Worth
- Worth Township, Cook County
- Worth Township, Woodford County
- Wrights
- Wyanet
- Wyanet Township, Bureau County
- Wyoming
- Wyoming Township, Lee County
- Wysox
- Wythe
- Xenia
- Xenia Township, Clay County
- Yates City
- Yates
- Yellowhead
- York Township, Carroll County
- York Township, Clark County
- York Township, DuPage County
- Yorktown
- Yorkville
- Young America
- Young Hickory
- Zanesville
- Zeigler
- Zion
- Zion Township, Lake County
- Zuma