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Rural Land
Clay County, IA
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
13,401
-
-
1910
12,766
-635
-0.5
1920
15,660
2,894
2.1
1930
16,107
447
0.3
1940
17,762
1,655
1.0
1950
18,103
341
0.2
1960
18,504
401
0.2
1970
18,464
-40
0.0
1980
19,576
1,112
0.6
1990
17,585
-1,991
-1.1
2000
17,372
-213
-0.1
Source:
U.S. Bureau of Census
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