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Calhoun County, IA
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
18,569
-
-
1910
17,090
-1,479
-0.8
1920
17,783
693
0.4
1930
17,605
-178
-0.1
1940
17,584
-21
0.0
1950
16,925
-659
-0.4
1960
15,923
-1,002
-0.6
1970
14,287
-1,636
-1.1
1980
13,542
-745
-0.5
1990
11,508
-2,034
-1.6
2000
11,115
-393
-0.3
Source:
U.S. Bureau of Census
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