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Illinois has a maximum north–south distance of 390 miles (630 km) and 210 miles (340 km) east-west. Total area is 57,918 square miles (150,010 km 2 ), ranked 25th in size of the 50 states. Water area is 2,325 square miles (6,020 km 2 ); Lake Michigan accounts for most of this.
There are 102 counties in Illinois. The most populous of these is Cook County, the second-most populous county in the United States and the home of Chicago, while the least populous is Hardin County. The largest by land area is McLean County, while the smallest is Putnam County. Illinois's FIPS state code is 17 and its postal abbreviation is IL.
Illinois is a state in the United States. Its capital is Springfield and its largest city is Chicago . It is bordered to the north by Wisconsin , to the west by Iowa and below that, by Missouri (both borders are along the Mississippi River ).
Illinois ( / ˌɪlɪˈnɔɪ / ⓘ IL-in-OY) is a state in the Midwestern region of the United States. It borders Lake Michigan to its northeast, the Mississippi River to its west, and the Wabash and Ohio rivers to its south.
Chicago [a] is the most populous city in the U.S. state of Illinois and in the Midwestern United States. With a population of 2,746,388 in the 2020 census, [8] it is the third-most populous city in the United States after New York City and Los Angeles.
Illinois lies between Lake Michigan and the Mississippi River and the Ohio River in the Midwestern United States. Chicago, Illinois, is the third most populous city and the third most populous metropolitan area of the United States. The United States created the Illinois Territory on March 1, 1809.
The Government of Illinois, under Illinois' Constitution, has three branches of government: Executive, Legislative, and Judicial.
