Illinois cities by population; 1, Chicago, 2, 665, 039; 2, Aurora, 177, 866; 3, Joliet, 150, 033; 4, Naperville, 149, 936, Aurora · Chicago Demography · Rockford Demography · Joliet. Champaign may not feature prominently if you list the populations of Illinois cities with a population of less than 100,000. Get a spreadsheet with the most up-to-date information on population, income, housing and other data for all cities in Illinois. There are several municipalities within the state that have a population of less than 1000, including Orient in Franklin County, Creal Springs in Williamson County, and Grand Tower in Jackson County.
It is also one of the most important cities in Illinois for its industrial and entertainment sectors. Here's a look at the largest cities in Illinois with key information and demographics extracted from U.S. Census data. UU.
Chicago is located on Lake Michigan and is the third largest city in the United States, with a metropolitan population of 9.6 million. When exploring the population of Illinois by city, Elgin is only in seventh place, but this Chicago suburb deserves your attention. Even so, you'll find everything from safe, family-friendly suburbs and small towns surrounded by nature and recreational activities to exciting urban areas. This far exceeds the population of the second most populated city, Aurora, which has just over 200,000 people according to estimates.
The state has a total of seven cities with populations exceeding 100,000 inhabitants and 192 cities with populations between 10,000 and 100,000 people. Before exploring Illinois cities by population, it's helpful to understand the population and demographics of the state as a whole.