Jefferson County, IL
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Population
2020
37,235
2010
38,827
2000
40,045
1990
37,020
1980
36,552
1970
31,446
1960
32,315
1950
35,892
1940
34,375
1930
31,034
1920
28,480
1910
29,111
1900
28,130
For corrections or additions, please contact me:
Sandy Bauer
