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.
â¢ After declining by more than 220,000 between 1980 and 1990, population in the. City of Chicago rose 4%, or 112,000, to 2.9 million in the 2000 census. â¢ Table 2 lists the 10 largest counties; the 10 fastest growing counties; the 10 largest. cities in Illinois; and the 10 fastest growing cities over the past decade.