Cities & Towns in Illinois,

Illinois, Located in the Midwest, it is home to Chicago, the third-largest city in the US. The state is a major transportation hub and an agricultural leader, known for its vast corn and soybean fields. It also plays a significant role in manufacturing and finance.. As of 2020 state had an estimated population of 12,587,530 inhabitants. The state was created 207 years ago in 1818. Its capital city is Springfield.

There are 52 city/town in Illinois, . The largest city of Illinois is Orland Park with a population of 57,347. Other cities include, Oak Lawn population 54,376, Oak Park population 51,852, Oswego population 36,696, O'Fallon population 29,606

Orland Park
Orland Park

Orland Park, Village in Illinois

Oak Lawn
Oak Lawn

Oak Lawn, Village in Illinois, United States of America

Oak Park
Oak Park

Oak Park, Village in Cook County, Illinois, United States; suburb of Chicago, Illinois

From the busy streets of Chicago to the river towns dotting its southern border, Illinois offers a variety of urban attractions and rural charm within its 57,000 square miles. Home to over 12.7 million residents, notable destinations in Illinois include:

Chicago - The largest city in the Midwest, Chicago dazzles with world-class museums like the Art Institute of Chicago, iconic sports teams and venues, deep dish pizza, and stunning lakefront skyline views.

Springfield - Illinois’ capital city, Springfield provides history buffs with Abraham Lincoln sites like his Home and Tomb along with expansive state government buildings.

Galena - Nestled near the Mississippi River, Galena is a beautifully preserved 19th century town with scenic vistas. Its Victorian-era downtown offers shopping, tours, and winery tastings.

Nauvoo - Founded by Mormons in the 1840s, Nauvoo retains its fascinating religious history. Historic homes and buildings like the rebuilt Nauvoo Temple transport visitors back in time.

Champaign-Urbana - Home to the University of Illinois, this twin college town offers innovative dining, cultural events, sports, and entertainment catering to students.

From the big city lights of Chicago to historic small towns, Illinois offers the best of Midwestern metropolitan areas alongside rural escape. Its rivers, lakes, and prairies provide scenic backdrops to favorite destinations.

All Illinois Cities (Aphebetical)

List of cities, towns, neighborhoods & other populated places in Illinois.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z all
City Name County Population
Orland Park Cook 57,347
Oak Lawn Cook 54,376
Oak Park Cook 51,852
Oswego Kendall 36,696
O'Fallon Saint Clair 29,606
Oak Forest Cook 26,884
Ottawa LaSalle 18,097
Olney Richland 8,667
Oak Brook DuPage 8,046
Orland Hills Cook 6,943
Olympia Fields Cook 4,747
Oglesby LaSalle 3,526
Oregon Ogle 3,449
Otto Kankakee 2,445
Oakbrook Terrace DuPage 2,094
Oakwood Hills McHenry 2,011
Orion Henry 1,776
Oakwood Vermilion 1,460
Oblong Crawford 1,357
Okawville Washington 1,349
Onarga Iroquois 1,241
Oquawka Henderson 1,231
Oneco Stephenson 1,228
Odin Marion 1,004
Oakley Macon 988
Odell Livingston 957
Osceola Stark 885
Ontario Knox 871
Olive Branch Alexander 864
Oreana Macon 804
Ogden Champaign 787
Orangeville Stephenson 737
Oneida Knox 653
Oak Grove Lake 585
Orange Clark 517
Ohio Bureau 475
Omega Marion 466
Osco Henry 437
Orient Franklin 338
Oskaloosa Clay 308
Olmsted Pulaski 288
Oakford Menard 273
Owaneco Christian 223
Oakdale Washington 201
Omaha Gallatin 199
Oconee Shelby 169
Old Mill Creek Lake 165
Old Shawneetown Gallatin 164
Oakland Coles 127
Ohlman Montgomery 124
Otterville Jersey 116
Old Ripley Bond 98
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County Cities on Map (52)