Illinois (IL)

illinois sign

Quick Facts

Capital City: Springfield

Abbreviation:  IL

Population (2019): 12,882,135; Rank: 5 of 50 | Population Quick Facts

Region:   Midwest

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”

Area Codes:   217, 224, 309, 312, 331, 618, 630, 708, 773, 779, 815, 847, 872

Zip Codes:   Illinois Zip Codes


State Symbols


Bird: Cardinal | List of State Birds

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

Flower:  Violet

Soil: Drummer


Tree: White Oak (Quercus alba) | Other State Trees

Quarter: Young Abraham Lincoln; farm scene; Chicago skyline; state outline; 21 stars, 11 on left edge and 10 on right




Illinois state location on a map


Area: 57,918 sq.mi (150,007, 25th

Land: 55,593 sq.mi. (143,985, 24th
Water: 2,325 sq.mi. (6,022, 20th
Great Lakes: 2,546 sq.mi. (6,594,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

National Parks:

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

State Government



Governor: JB Pritzker. (D) sine 2019

Senators:  Dick Durbin (D) Tammy Duckworth (D)

Representatives:  Illinois House

Illinois Senate

Constitution:  Illinois Constitution

Electoral College Votes:  20  Votes



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.