Illinois Map - IL Map

The 25th most extensive and 6th most populous state of the 50 states of US is Illinois. The state is bordered by Iowa, Missouri, Kentucky, Indiana, Michigan and Wisconsin. The capital city is Springfield, while the largest city is Chicago.

Map of Illinois with Cities, Road, River, Highways

Map of Illinois About Map: Illinois Map showing the capital, state boundary, roads, rail network,rivers, interstate highways, major cities and towns.

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About Illinois State Map

Illinois is a state located in the Midwestern region of the United States. Illinois Map provides detailed information about the geography, location, counties, roads, railways, rivers, golf courses, museums of the state as well as Illinois directions. Illinois ranks fifth in terms of population among the 50 states of United States. Geographically diverse, Illinois houses a number of popular tourist attractions.

The total area of Illinois State is 57,918 square miles and is located on the eastern side of north-central United States. The state map of Illinois shows the 102 counties with their geographical location. The state is drained by Beaucoup Creek, Leaf, Ohio and West Okaw rivers. Comprising mainly flat regions, streams, lakes and rivers, Illinois State lies between 36º 58' and 42º 30' North Latitude and 87º 30' and 91º 31' West Longitude.

O'Hare International Airport in Chicago is the largest in the state and one of the busiest in the world. Besides, there is an extensive network of roads and railways, which connects the different parts of the state. The white-tailed deer is the state animal while the state bird is Cardinal. The Monarch Butterfly and Bluegill are the State Insect and State Fish, respectively. The populace of Illinois State has voted the Square Dance as the official dance of the state.

English is the official language while some people also speak Spanish. Christianity is the dominant religion in Illinois. Among the Christians, Protestants comprise the bulk of the population. Apart from Christians, a considerable presence of Hindus, Sikhs, Muslims and Jews is also found in the outskirts of Chicago.

Climate: Illinois has a humid continental climate, with four distinct seasons. Summers tend to be hot and humid, while winters are cold with occasional snow and ice storms.

Important Cities in Illinois by Population:

Chicago is the largest amongst the Illinois Cities. It is the third most populated city of the United States of America. Apart from Chicago, there are six other cities, which boast of a population of more than 1 lakh. These cities are Aurora, Rockford, Naperville, Joliet, Springfield and Peoria. Springfield is the capital of Illinois State.

Cities with populations above 50,000 include: Chicago (2,853,114), Aurora (171,782), Rockford (157,272), Joliet (146,125), Naperville (143,117), Springfield (117,352), Peoria (114,114), Elgin (106,330), Waukegan (90,788), Cicero 80,414), Champaign (79,389), Evanston (77,693), Decatur (76,256), Arlington Heights 73,399), Bloomington (73,026), Schaumburg 71,716), Bolingbrook 70,823), Palatine 67,080), Skokie 66,620), Tinley Park 59,198), Des Plaines (57,062), Orland Park 55,514), Wheaton (54,465), Hoffman Estates 53,641), Mount Prospect 53,338), Oak Lawn 53,244)and Normal 52,056).

10 Largest cities or towns in Illinois

RankNameCountyPop. (2020 US Census)
6ElginKane, Cook114,797

Illinois Interstates Highways:

  • I-24 - Travels from Kentucky to Illinois, passing through the southeastern part of the state and connecting with I-57 and I-64.
  • I-39 - Travels north from Bloomington to Rockford, connecting with I-90 and I-94.
  • I-55 - Travels from St. Louis, Missouri to Chicago, passing through Springfield and Bloomington-Normal.
  • I-57 - Travels south from Chicago to Cairo, passing through Champaign-Urbana and Marion.
  • I-64 - Travels from Missouri to Kentucky, passing through southern Illinois and connecting with I-57 and I-70.
  • I-70 - Travels from Missouri to Indiana, passing through the southwestern corner of Illinois and connecting with I-55 and I-64.
  • I-72 - Travels from Quincy to Champaign-Urbana, connecting with I-55 and I-57.
  • I-74 - Travels from Moline to Danville, connecting with I-80, I-55, and I-57.
  • I-80 - Travels from Iowa to Indiana, passing through the northern part of Illinois and connecting with I-39, I-55, and I-74.
  • I-90 - Travels from Rockford to Chicago, passing through the northwestern part of Illinois and connecting with I-39 and I-94.
  • I-94 - Travels from Wisconsin to Indiana, passing through the northeastern part of Illinois and connecting with I-90 and I-39.

US Highways and State Routes in Illinois

Route 1, Route 17, Route 19, Route 23, Route 25, Route 27, Route 27A, Route 29, Route 41, Route 76, Route 78, Route 80, Route 82, Route 84, Route 129, Route 221, Route 278, route 280, Route 301, Route 319, Route 341, Route 378 and Route 441.

Illinois State Facts

State NameIllinois
CountryUnited States
ContinentNorth America
Capital CitySpringfield
Largest cityChicago
AbbreviationIL, Ill., US-IL
Joined the UnionDecember 3, 1818 (21st)
NicknamePrairie State
Area57,914 sq mi (149,998 km2)
TimezoneCentral: UTC -6/-5
Population12,812,508 - 6th Rank (2020 U.S Census)
Highest PointCharles Mound - 1,235 ft (376.4 m)
Lowest PointConfluence of Mississippi River and Ohio River - 280 ft (85 m)
Time zoneUTC−06:00 (CST) | DST - UTC−05:00 (CDT)
Latitude36°58′ N to 42°30′ N
Longitude87°30′ W to 91°31′ W
Last Updated: May 1, 2023