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Rural Land
Mason County, IL
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
17,491
-
-
1910
17,377
-114
-0.1
1920
16,634
-743
-0.4
1930
15,115
-1,519
-1.0
1940
15,358
243
0.2
1950
15,326
-32
0.0
1960
15,193
-133
-0.1
1970
16,161
968
0.6
1980
19,492
3,331
1.9
1990
16,269
-3,223
-1.8
2000
16,038
-231
-0.1
Source:
U.S. Bureau of Census
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