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Rural Land
Johnson County, IA
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
24,817
-
-
1910
25,914
1,097
0.4
1920
26,462
548
0.2
1930
30,276
3,814
1.4
1940
33,191
2,915
0.9
1950
45,756
12,565
3.3
1960
53,663
7,907
1.6
1970
72,127
18,464
3.0
1980
81,717
9,590
1.3
1990
96,119
14,402
1.6
2000
111,006
14,887
1.5
Source:
U.S. Bureau of Census
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