Illinois became the 21st state admitted to the Union in 1818. Illinois is a Midwestern state beween Indiana and Kentucky to the east and Iowa and Missouri to the west with a northeast boundary on Lake Michigan.
Illinois is one of the most populated states in the nation. Large cities include Chicago, Aurora, Rockford, Naperville, Joliet and Naperville. Springfield is the capital city.
The topography of Illinois is almost entirely Great Plains. The highest point of elevation is in the northwest corner of the state at 1200 feet above sea level. The climate is hot and humid summers and cold winters with higher than average precipitation.
Illinois is an economic leader in agriculture, finance, transportation, food manufacturing and meat processing. Illinois is one of the highest taxing states in the nation.
Illinois is a favorite of retirees and two places are included in our survey of best places to retire. Get video tours of these great cities at Illinois videos.