Information About Illinois
Population of Illinois: 12,763,371 (Census 2005 estimate)
Number of counties: 102 (browse Illinois by county)
Number of populated places in Illinois: 1397 (browse Illinois by place)
"Populated Places" include cities, boroughs, towns, villages and named areas that have city features.
Land area of Illinois: 55,583.584 square miles (approx)
Water area of Illinois: 2,330.791 square miles (approx)
Total area of Illinois: 57,914.375 square miles (approx)
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Largest Populated Areas in Illinois |
Biggest Counties in Illinois |
| By Population |
By Land Area (in sq. mi.) |
Cook County (5,376,741) DuPage County (904,161) Lake County (644,356) Will County (502,266) Kane County (404,119)
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McLean County (1,183.53) La Salle County (1,134.92) Iroquois County (1,116.43) Livingston County (1,043.76) Champaign County (996.81)
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Biggest Cities in Illinois |
| By Population |
By Land Area (in sq. mi.) |
Chicago (2,896,016) Rockford (150,115) Aurora (142,990) Naperville (128,358) Peoria (112,936)
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Chicago (227) Rockford (56) Springfield (54) Peoria (44) Decatur (42)
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Demographic Information for Illinois
Urban Population: 87.84%
Male Population: 48.96%
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Rural Population: 12.16%
Female Population: 51.04%
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Poverty Rate: 10.68% |
Points of Interest In Illinois
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Illinois
Illinois
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