Capital City: Springfield
Population (2019): 12,882,135; Rank: 5 of 50 | Population Quick Facts
Admission to Statehood: December 3, 1818 (21st State)
State Motto: State sovereignty, national union
State Nickname: Prairie State
Origin of State Name: Based on the Algonquin Indian word ilenweewa meaning “warriors”
Sports Teams: Find the best High School, College, League, and Professional sports teams of Illinois State
Zip Codes: Illinois Zip Codes
Flag: The Illinois flag is a simple representation of the Great Seal of Illinois against a white background. In 1969, the General Assembly voted to add the word “ILLINOIS” under the Great Seal of the flag. The State’s name was added to the flag to ensure that people not familiar with the Great Seal of Illinois would still recognize the banner. Flag adopted 1915. Get this Flag
- “Illinois” | Words by: Charles H. Chamberlin | Music by: Archibald Johnston
- Other State Songs | Sheet Music
Quarter: Young Abraham Lincoln; farm scene; Chicago skyline; state outline; 21 stars, 11 on left edge and 10 on right
Area: 57,918 sq.mi (150,007 sq.km.), 25th
Land: 55,593 sq.mi. (143,985 sq.km.), 24th
Water: 2,325 sq.mi. (6,022 sq.km.), 20th
Great Lakes: 2,546 sq.mi. (6,594 sq.km.),tied for 5th
Largest Cities: Chicago | Aurora | Rockford | Joliet | Naperville | Springfield | Peoria | Elgin | Waukegan | Cicero
Border States: Indiana | Iowa | Michigan | Kentucky | Missouri | Wisconsin | List of US Regions
Highest Point: Charles Mound ; 1,235 feet, (376 m), 45th tallest
Lowest Point: Illinois; 279 feet, 32nd lowest
Geographic Center: Logan, 28 miles northeast of Springfield
Blank Outline Maps: Find printable blank map of the State of Illinois , without names, so you can quiz yourself on important locations, abbreviations, or state capital.
City Guide: Visit Illinois City Guide for a look at geography, local history, architecture, and culture.
Lincoln Home National Historic Site
Pullman National Monument
Lewis and Clark National Historic Trail
Absolute Center: 40°0.8’N / 89°18.4’W
Relative Center: Logan, 28 miles northeast of Springfield
Distance Between U.S. Cities
Agriculture: Corn, soybeans, hogs, cattle, dairy products, wheat.
Industry: Machinery, food processing, electric equipment, chemical products, printing and publishing, fabricated metal products, transportation equipment, petroleum, coal.