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. Naperville is ranked as one of the wealthiest cities in the Midwest, in addition to having some of the lowest crime statistics, making it a great place to live for families and older people. Among the 100 largest cities in Illinois, the fastest-shrinking city is Chicago Heights, whose population has declined 17.8% since 2000. Get a spreadsheet with the latest demographics on population, income, housing, and more for all cities in Illinois.
Chicago developed rapidly over the years and is now ranked as one of the most important cities on the planet. The second largest city is Aurora, with a population of 179,266, and it is the 144th largest city in the U.S. UU. It is nicknamed the “City of Lights” because it was one of the first cities in the entire United States to install an electric public lighting system.
Chicago Heights was once the 841 largest city in the United States, but it is now the 1447th largest. The major cities in Illinois are Chicago, Aurora, Joliet, Naperville, Rockford, Elgin, Springfield, and Peoria. Cities can be wonderful places to live, but they're often dominated by dull gray buildings and a lack of color and vibrancy everywhere. The Palm House at the Garfield Park Conservatory is the largest room in the building, ninety feet wide and sixty-five feet high.
The Garfield Park Conservatory in Chicago is one of the most impressive and largest conservatories in the United States. The capital of the state of Illinois is Springfield, but the largest and most well-known city in the state is Chicago, which is also the third largest city in the entire United States.