History of Illinois

Historical population
YearPop.±% p.a.
1800 2,458—    
1810 12,282+17.45%
1820 55,211+16.22%
1830 157,445+11.05%
1840 476,183+11.70%
1850 851,470+5.98%
1860 1,711,951+7.23%
1870 2,539,891+4.02%
1880 3,077,871+1.94%
1890 3,826,352+2.20%
1900 4,821,550+2.34%
1910 5,638,591+1.58%
1920 6,485,280+1.41%
1930 7,630,654+1.64%
1940 7,897,241+0.34%
1950 8,712,176+0.99%
1960 10,081,158+1.47%
1970 11,113,976+0.98%
1980 11,426,518+0.28%
1990 11,430,602+0.00%
2000 12,419,293+0.83%
2010 12,830,632+0.33%
2020 12,812,508−0.01%
Source:
1910–2020[1]

The history of Illinois may be defined by several broad historical periods, namely, the pre-Columbian period, the era of European exploration and colonization, its development as part of the American frontier, its early statehood period, growth in the 19th and 20th centuries, and contemporary Illinois of today.

  1. ^ "Historical Population Change Data (1910–2020)". Census.gov. United States Census Bureau. Archived from the original on April 29, 2021. Retrieved May 1, 2021.

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