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Boone County, IL
Population by Decades

Date Population Population
Change
Annual
% Change
1900 15,791--
1910 15,481-310-0.2
1920 15,322-159-0.1
1930 15,078-244-0.2
1940 15,2021240.1
1950 17,0701,8681.2
1960 20,3263,2561.8
1970 25,4405,1142.3
1980 28,6303,1901.2
1990 30,8062,1760.7
2000 41,78610,9803.1
Source: U.S. Bureau of Census

 
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