miniaturadaimagem|255x255px|Localização geográfica do Illinois nos Estados Unidos. O Illinois é um estado localizado na região centro-oeste dos Estados Unidos. De acordo com o Censo dos Estados Unidos de 2010, Illinois é o 5º estado o mais populoso com 12.831.549 habitantes, mas o 24º maior por área de terra medindo 143,793.4 km². O estado de Illinois é dividido em 102 condados e contém 1.299 municípios incorporados consistindo de cidades, vilas e aldeias.
Abaixo está uma listas das cidades do estado de Illinois.
A Abingdon Addieville Addison Adeline Albany Albers Albion Aledo Alexis Algonquin Alhambra Allendale Allenville Allerton Alma Alorton Alpha Alsey Alsip Altamont Alto Pass Alton Altona Alvin Amboy Anchor Andalusia Andover Anna Annawan Antioch Apple River Arcola Arenzville Argenta Arlington Arlington Heights Armington Aroma Park Arrowsmith Arthur Ashkum Ashland Ashley Ashmore Ashton Assumption Astoria Athens Atkinson Atlanta Atwood Auburn Augusta Aurora Ava Aviston Avon
B Baldwin Banner Bannockburn Bardolph Barrington Barrington Hills Barry Bartelso Bartlett Bartonville Basco Batavia Batchtown Bath Bay View Gardens Baylis Beach Park Beardstown Beaverville Beckemeyer Bedford Park Beecher Beecher City Belgium Belknap Belle Prairie City Belle Rive Belleville Bellevue Bellflower Bellmont Bellwood Belvidere Bement Benld Bensenville Benson Bentley Benton Berkeley Berlin Berwyn Bethalto Bethany Biggsville Bingham Birds Bishop Hill Bismarck Blandinsville Bloomingdale Bloomington Blue Island Blue Mound Bluffs Bluford Bolingbrook Bondville Bone Gap Bonfield Bonnie Boulder Hill Bourbonnais Bowen Braceville Braford Bradley Braidwood Breese Bridgeport Bridgeview Brighton Brimfield Broadlands Broadview Broadwell Brocton Brookfield Brooklyn Brookport Broughton Browning Browns Brownstown Brussels Bryant Buckingham Buckley Buckner Buda Buffalo Buffalo Grove Bull Valley Bulpitt Buncombe Bunker Hill Burbank Bureau Junction Burlington Burnham Burnt Prairie Burr Ridge Bush Bushnell Butler Byron
C Cabery Cahokia Cairo Caledonia Calhoun Calumet City Calumet Park Camargo Cambria Cambridge Camden Camp Point Campbell Hill Campus Canton Cantrall Capron Carbon Cliff Carbon Hill Carbondale Carlinville Carlock Carlyle Carmi Carol Stream Carpentersville Carrier Mills Carrollton Carterville Carthage Cary Casey Caseyville Catlin Cave-In-Rock Cedar Point Centralia Cedarville Central City Centreville Cerro Gordo Chadwick Champaign Champaign Champaign-Urbana Chandlerville Channahon Channel Lake Chapin Charleston Chatham Chatsworth Chebanse Chenoa Cherry Cherry Valley Chester Chesterfield Chicago Chicago Heights Chicago Ridge Chillicothe Chrisman Christopher Cicero Cisco Cisne Cissna Park Claremont Clarendon Hills Clay City Clayton Clear Lake Cleveland Clifton Clinton Coal City Coal Valley Coalton Coatsburg Cobden Coffeen Colchester Coleta Colfax Collinsville Colona Colp Columbia Columbus Compton Concord Congerville Cooksville Cordova Cornell Cortland Coulterville Country Club Hills Countryside Cowden Coyne Center Crainville Creal Springs Crescent City Crest Hill Creston Crestwood Crete Creve Couer Crossville Crystal Lake Crystal Lawns Cuba Cullom Cutler Cypress
D Dahlgren Dakota Dallas City Dalton City Dalzell Damiansville Dana Danforth Danvers Danville Darien Davis Davis Junction Dawson De Land De Pue De Soto De Witt DeKalb Decatur DeKalb Deer Creek Deer Grove Deer Park Deerfield Delavan Des Plaines Des Plaines Detroit Diamond Dieterich Divernon Dix Dixmoor Dixon Dolton Dongola Donnellson Donovan Dorchester Dover Dowell Downers Grove Downs Du Bois Du Quoin Dunfermline Dunlap Dupo Durand Dwight
E Eagarville Earlville East Alton East Brooklyn East Cape Girardeau East Carondelet East Dubuque East Dundee East Galesburg East Gillespie East Hazel Crest East Moline East Peoria East St. Louis Easton Eddyville Edgewood edinburg Edwardsville Effingham El Dara El Paso Elburn Eldorado Eldred Elgin Elizabeth Elizabethtown Elk Grove Village Elkhart Elkville Elliott Ellis Grove Ellisville Ellsworth Elmhurst Elmhurst Elmwood Elwood Park Elsah Elvaston Elwood Emden Emington Energy Enfield Equality Erie Essex Eureka Evanston Evansville Evergreen Park Ewing Exeter
F Fairbury Fairfield Fairmont Fairmont City Fairmount Fairview Heights Farina Farmer City Farmersville Farmington Fayetteville Ferris Fidelity Fieldon Fillmore Findlay Fisher Fithian Flanagan Flat Rock Flora Florence Flossmoor Foosland Ford Heights Forest City Forest Lake Forest Park Forest View Forrest Forreston Forsyth Fox Lake Fox Lake Hills Fox River Grove Fox River Valley Gardens Frankfort Frankfort Square Franklin Franklin Grove Franklin Park Freeburg Freeman Spur Freeport Fulton Fults
G Gages Lake Galatia Galena Galesburg Galva Gardner Garrett Gays Geneseo Geneva Genoa Georgetown German Valley Germantown Germantown Hills Gibson Gifford Gilberts Gillespie Gilman Girard Gladstone Glasford Glasgow Glen Carbon Glen Ellyn Glencoe Glendale Heights Glenview Glenwood Godfrey Godley Golconda Golden Golden Gate Golf Good Hope Goodfield Goodings Grove Goreville Gorham Grafton Grand Ridge Grand Tower Grandview Grandwood Park Granite City Grant Park Grantfork Grandville Grayslake Grayville Green Oaks Green Valley Greenfield Greenup Greenview Greenville Greenwood Gridley Griggsville Gulf Port Gurnee
H Hainesville Hamburg Hamel Hamilton Hammond Hampshire Hampton Hanaford Hanna City Hanover Hanover Park Hardin Harmon Harrisburg Harristown Hartford Hartsburg Harvard Harvel Harvey Harwood Heights Havana Hawthorn Woods Hazel Crest Hebron Hecker Henderson Hennepin Henning Henry Herrick Herrin Herscher Hettick Heyworth Hickory Hills Hidalgo Highland Highland Park Highwood Hillcrest Hillsboro Hillsdale Hillside Hillview Hickley Hindsboro Hinsdale Hodgkins Hoffman Hoffman Estates Holiday Hills Hollowayville Homer Hometown Homewood Hoopeston Hooppole Hopedale Hopewell Hopkins Park Hoyleton Hudson Huey Hull Humboldt Hume Huntley Hurst Hutsonville
I Illiopolis Ina Indian Creek Indian Head Park Indianola Industry Ingalls Park Inverness Iola Ipava Iroquois Irving Irvington Irwin Island Lake Itasca Iuka Ivesdale
J Jacksonville Jeffersonville Jeisyville Jerome Jerseyville Jewett Johnsburg Johnsonville Johnston City Joliet Jonesboro Joppa Joy Junction Junction City Justice
K Kampsville Kane Kangley Kankakee Kansas Kappa Karnak Kaskaskia Keenes Keensburg Keithsburg Kell Kempton Kenilworth Kenney Kewanee Keyesport Kilbourne Kildeer Kincaid Kinderhook Kingston Kingston Mines Kinmundy Kinsman Kirkland Kirkwood Knoxville
L Lacon Ladd La Grange Park La Harpe Lake Barrington Lake Bluff Lake Catherine Lake Forest Lake Forest Lake Summerset Lake Villa Lake Zurich Lake in the Hills Lake of the Woods Lakemoor Lakewood Lakewood Shores La Moille Lanark La Rose La Salle Latham Lawrenceville Leaf River Lebanon Leland Grove Lemont Lena Lenzburg Leonore Lerna Le Roy Lewistown Lexington Lily Lake Lincoln Lincolnwood Litchfield Loami Lockport Loda London Mills Lostant Loves Park
M McHenry McLeansboro Macomb Macon Madison Marengo Marion Markham Maroa Marquette Heights Marseilles Marshall Martinsville Mascoutah Mason City Mattoon Mendota Metropolis Minonk Moline Momence Monmouth Monticello Morris Morrison Mound City Mounds Mount Carmel Mount Carroll Mount Olive Mount Pulaski Mount Sterling Mount Vernon Murphysboro
N Naperville Nashville Nason Nauvoo Neoga New Boston Newman Newton Nokomis North Chicago Northlake
O Oakbrook Terrace Oak Forest Oakland O'Fallon Oglesby Olney Oneida Oregon Orient Ottawa
P Palos Heights Palos Hills Pana Paris Park City Park Ridge Paxton Pekin Peoria Peru Petersburg Pinckneyville Pittsfield Plano Polo Pontiac Princeton Prophetstown Prospect Heights
Q Quincy
R Red Bud Robinson Rochelle Rock Falls Rockford Rock Island Rolling Meadows Roodhouse Rosiclare Rushville
S St. Charles St. Elmo St. Francisville Salem Sandwich Savanna Sesser Shawneetown Shelbyville Silvis South Beloit Sparta Springfield Spring Valley Staunton Sterling Streator Sullivan Sumner Sycamore
T Taylorville Toluca Toulon Trenton Troy Tuscola
U Urbana
V Vandalia Venice Vienna Villa Grove Virden Virginia
W Wamac Warrenville Warsaw Washington Waterloo Watseka Waukegan Waverly Wenona West Chicago West Frankfort West Peoria Wheaton White Hall Wilmington Winchester Windsor Witt Wood Dale Wood River Woodstock Wyoming
Y Yorkville
Z Zeigler Zion
Illinois Cidade