This office does not issue business licenses. To obtain a license, contact the City Hall in the city where the business will be conducted. (or click here for a listing). For a business to be conducted in an unincorporated area of the County, contact the Los Angeles County Business License office at (213) 974-0093.
Chicago is the largest city in the state and the third most populous city in the United States, with its 2010 population of 2,695,598. The U.S. Census Bureau currently lists seven other cities with populations of over 100,000 within Illinois.
List of Largest Cities in Illinois. Illinois is the State in United State located at Midwestern part of the country, is 5th populous state (12, 88,135 estimated in 2013) and 25 th largest by area in United States (149,998 km 2 at the density of 89 per km 2). Springfield is the capital city and 6 th largest city of Illinois State. Chicago is the largest city of Illinois and 3 rd largest in United States with the population of 2,718,782 at the density of 4,610 inhabitants per km 2 on the total area of 587 km 2. Cicero city has highest density of 5,536 inhabitants per km 2 on the area of 15 km 2. The below 25 largest cities and towns of above 50,000 inhabitants, and ranked on population with details of Area and density.