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Decade Censuses
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Rural Land
Cook County, IL
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
1,838,735
-
-
1910
2,405,233
566,498
2.7
1920
3,053,017
647,784
2.4
1930
3,982,123
929,106
2.7
1940
4,063,342
81,219
0.2
1950
4,508,792
445,450
1.0
1960
5,129,725
620,933
1.3
1970
5,492,369
362,644
0.7
1980
5,253,655
-238,714
-0.4
1990
5,105,067
-148,588
-0.3
2000
5,376,741
271,674
0.5
Source:
U.S. Bureau of Census
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