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Grundy County, IA
Population by Decades

Date Population Population
Change
Annual
% Change
1900 13,757--
1910 13,574-183-0.1
1920 14,4208460.6
1930 14,133-287-0.2
1940 13,518-615-0.4
1950 13,7222040.1
1960 14,1324100.3
1970 14,119-130.0
1980 14,3662470.2
1990 12,029-2,337-1.8
2000 12,3693400.3
Source: U.S. Bureau of Census

 
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