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.

Population, 2006 estimate 12,831,970, White persons 79.4%, Black persons 15.1%, American Indian and Alaska Native persons 0.3%, Asian persons 4.1%, Native Hawaiian and Other Pacific Islander 0.2%, Persons reporting two or more races 1.1%, Persons of Hispanic or Latino origin 14.3%.