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DeKalb County, IL
Population by Decades

Date Population Population
Change
Annual
% Change
1900 31,756--
1910 33,4571,7010.5
1920 31,339-2,118-0.7
1930 32,6441,3050.4
1940 34,3881,7440.5
1950 40,7816,3931.7
1960 51,71410,9332.4
1970 71,65419,9403.3
1980 74,6242,9700.4
1990 77,9323,3080.4
2000 88,96911,0371.3
Source: U.S. Bureau of Census

 
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