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  Jefferson - Demographic History
County DETAILS
Parents > United States > Illinois > IL Counties > Jefferson  
Website
Established March 26, 1819
Disbanded Still Active
Last ModifiedRP October 02, 2013 11:46pm
Description

INFORMATION
DatePopulation
Apr 01, 2020
Population
37,113 (100%)
Apr 01, 2010
Population
38,827 (100%)
Jul 01, 2009
Population
39,944 (100%)
Jul 01, 2008
Population
40,069 (100%)
Jul 01, 2007
Population
40,096 (100%)
Jul 01, 2006
Population
40,109 (100%)
Jul 01, 2005
Population
40,097 (100%)
Jul 01, 2004
Population
40,034 (100%)
Jul 01, 2003
Population
40,028 (100%)
Jul 01, 2002
Population
40,028 (100%)
Jul 01, 2001
Population
40,008 (100%)
Jul 01, 2000
Population
40,053 (100%)
Apr 01, 1990
Population
37,020 (100%)
Apr 01, 1980
Population
36,552 (100%)
Apr 01, 1970
Population
31,446 (100%)
Apr 01, 1960
Population
32,315 (100%)
Apr 01, 1950
Population
35,892 (100%)
Apr 01, 1940
Population
34,375 (100%)
Apr 01, 1930
Population
31,034 (100%)
Jan 01, 1920
Population
28,480 (100%)
Apr 15, 1910
Population
29,111 (100%)
Jun 01, 1900
Population
28,133 (100%)
Jun 02, 1890
Population
22,590 (100%)
Jun 01, 1880
Population
20,686 (100%)
Jun 01, 1870
Population
17,864 (100%)
Jun 01, 1860
Population
12,965 (100%)
Jun 01, 1850
Population
8,109 (100%)
Jun 01, 1840
Population
5,762 (100%)
Jun 01, 1830
Population
2,555 (100%)
Aug 07, 1820
Population
691 (100%)