Top 10 Cities of Illinois by Population

Chicago

Population: 2,696,555 2021-07-01

  • Area: 589.82 km² 227.73 mi²
  • Density: 4,572 inh./km² 11,841 inh./mi²
  • Growth: -1.5% per year
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Aurora

Population: 179,266 2021-07-01

  • Area: 116.47 km² 44.97 mi²
  • Density: 1,539 inh./km² 3,986 inh./mi²
  • Growth: -0.6% per year
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Joliet

Population: 150,372 2021-07-01

  • Area: 168.56 km² 65.08 mi²
  • Density: 892 inh./km² 2,310 inh./mi²
  • Growth: +0.0% per year
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Naperville

Population: 149,104 2021-07-01

  • Area: 101.26 km² 39.10 mi²
  • Density: 1,472 inh./km² 3,814 inh./mi²
  • Growth: -0.2% per year
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Rockford

Population: 147,711 2021-07-01

  • Area: 168.11 km² 64.91 mi²
  • Density: 879 inh./km² 2,276 inh./mi²
  • Growth: -0.7% per year
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Elgin

Population: 113,911 2021-07-01

  • Area: 98.49 km² 38.03 mi²
  • Density: 1,157 inh./km² 2,996 inh./mi²
  • Growth: -0.6% per year
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Springfield

Population: 113,394 2021-07-01

  • Area: 158.51 km² 61.20 mi²
  • Density: 715 inh./km² 1,853 inh./mi²
  • Growth: -0.8% per year
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Peoria

Population: 111,666 2021-07-01

  • Area: 124.24 km² 47.97 mi²
  • Density: 899 inh./km² 2,328 inh./mi²
  • Growth: -1.1% per year
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Champaign

Population: 89,114 2021-07-01

  • Area: 59.54 km² 22.99 mi²
  • Density: 1,497 inh./km² 3,876 inh./mi²
  • Growth: +0.6% per year
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Waukegan

Population: 88,614 2021-07-01

  • Area: 62.75 km² 24.23 mi²
  • Density: 1,412 inh./km² 3,658 inh./mi²
  • Growth: -0.7% per year
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