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St. Clair County, IL
Population by Decades

Date Population Population
Change
Annual
% Change
1900 86,685--
1910 119,87033,1853.3
1920 136,52016,6501.3
1930 157,77521,2551.5
1940 166,8999,1240.6
1950 205,99539,0962.1
1960 262,50956,5142.5
1970 285,17622,6670.8
1980 267,531-17,645-0.6
1990 262,852-4,679-0.2
2000 256,082-6,770-0.3
Source: U.S. Bureau of Census

 
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