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McHenry County, IL
Population by Decades

Date Population Population
Change
Annual
% Change
1900 29,759--
1910 32,5092,7500.9
1920 33,1646550.2
1930 35,0791,9150.6
1940 37,3112,2320.6
1950 50,65613,3453.1
1960 84,21033,5545.2
1970 111,55527,3452.9
1980 147,89736,3422.9
1990 183,24135,3442.2
2000 260,07776,8363.6
Source: U.S. Bureau of Census

 
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