Flag of Illinois

The Illinois flag has the seal of Illinois in the centre, with the name of the state in capital letters underneath. The colors of the flag are white, red, yellow and brown. The size of the Illinois flag is 3:5. The Illinois flag was adopted in 1915. The first use of the current design was in 1915. The last change to the current design of the Illinois flag was in 1970.

Flag of Illinois

Downloads of the Illinois flag

Countryflags.com offers a large collection of images of the Illinois flag. Our collection contains vector files (EPS, AI, PDF and SVG), images (JPG, PNG), backgrounds (all common sizes of wallpapers for screen, mobile and tablet) and an extensive collection of icons of the Illinois flag. The images are of high quality and can be used free of charge for non-commercial and commercial use.

Flag proportion

Ratio 3:5


  • First flag usage: 1915
  • Adoption current flag: 1915
  • Last change flag: 1970

Flag colors


About Illinois


12 830 632


57 913 sq mi
149 995 km2

Population density

222 sq mi
86 km2

Country information

Country: Illinois
Continent: North America
Official languages: English
Capital: Springfield
Government: divided into executive, judicial and legislative branches
Border length: 0 miles / 0 km
Neighbouring countries
Wisconsin: 0 miles 0 km
Iowa: 0 miles 0 km
Missouri: 0 miles 0 km
Indiana: 0 miles 0 km
Kentucky: 0 miles 0 km

The Illinois flag is the flag of the state of Illinois. Illinois is located on the continent of North America. Illinois has 5 neighbors. Illinois has the following neighboring states: Wisconsin, Iowa, Missouri, Indiana and Kentucky.

12,830,632 people live in Illinois, a state with an area of 149,995 km² (4.0% water). The population density in Illinois is 86 inhabitants per km². The official language in Illinois is English. The capital of Illinois is Springfield. Illinois is divided into executive, judicial and legislative departments.

The currency in Illinois is the U.S. dollar (USD). UTC (default time) in Illinois is UTC-06:00 and UTC-05:00 in summer.




US dollar (USD)


CET: UTC-06:00
CEST: UTC-05:00


Internet TLD: US
Three-letter country code: USA
Three-digit country code: 840
Calling code: 1