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Carroll County, IA
Population by Decades

Date Population Population
Change
Annual
% Change
1900 20,319--
1910 20,117-202-0.1
1920 21,5491,4320.7
1930 22,3267770.4
1940 22,7704440.2
1950 23,0652950.1
1960 23,4313660.2
1970 22,912-519-0.2
1980 22,951390.0
1990 21,423-1,528-0.7
2000 21,421-20.0
Source: U.S. Bureau of Census

 
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