Jefferson County is located in the state of Illinois, with a total population of 37684. The land area spans approximately 1479.31441 square miles, contributing to its total area of 1511.994401 square miles.

Jefferson County Interactive Map

About Jefferson County, Illinois

Here is some important info of Jefferson County, Illinois

Jefferson County, Illinois Population Demographics

As of the last census, Jefferson County has a total population of 37684, out of which 19399 are Male while 18285 are female.

You can check the total population for every year in the below table:

Year Population
2010 38755
2011 38749
2012 38658
2013 38641
2014 38374
2015 38272
2016 38214
2017 38045
2018 37708
2019 37684

Race Demographics

Category Percentage
non_hispanic_white_alone_male 42.9%
non_hispanic_white_alone_female 42.4%
black_alone_male 5.5%
black_alone_female 3.4%
asian_alone_male 0.6%
asian_alone_female 0.6%
hispanic_male 1.8%
hispanic_female 1.1%

Age Demographics

Category Percentage
0-4 6.3%
5-9 6.2%
10-14 6.1%
15-19 5.6%
20-24 5.4%
25-29 6.8%
30-34 5.9%
35-39 6.4%
40-44 6.0%
45-49 6.1%
50-54 6.3%
55-59 6.7%
60-64 6.7%
65-69 6.2%
70-74 5.0%
75-79 3.5%
80-84 2.3%
85+ 2.4%

Additional Information

  • Average Income: 39581
  • Number of Police officers: 122
  • Jefferson County FIPS code: 17081

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Source: Census.gov, Wikipedia.org