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Rural Land
Marion County, IL
Population by Decades
Date
Population
Population
Change
Annual
% Change
1900
30,446
-
-
1910
35,094
4,648
1.4
1920
37,497
2,403
0.7
1930
35,635
-1,862
-0.5
1940
47,989
12,354
3.0
1950
41,700
-6,289
-1.4
1960
39,349
-2,351
-0.6
1970
38,986
-363
-0.1
1980
43,523
4,537
1.1
1990
41,561
-1,962
-0.5
2000
41,691
130
0.0
Source:
U.S. Bureau of Census
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