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Henry County, IL
Population by Decades

Date Population Population
Change
Annual
% Change
1900 40,049--
1910 41,7361,6870.4
1920 45,1623,4260.8
1930 43,851-1,311-0.3
1940 43,798-530.0
1950 46,4922,6940.6
1960 49,3172,8250.6
1970 53,2173,9000.8
1980 57,9684,7510.9
1990 51,159-6,809-1.2
2000 51,020-1390.0
Source: U.S. Bureau of Census

 
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