Johnson County is located in the state of Illinois, with a total population of 12417. The land area spans approximately 890.741064 square miles, contributing to its total area of 903.552515 square miles.

Johnson County Interactive Map

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About Johnson County, Illinois

Here is some important info of Johnson County, Illinois

Johnson County, Illinois Population Demographics

As of the last census, Johnson County has a total population of 12417, out of which 6764 are Male while 5653 are female.

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

Year Population
2010 12604
2011 12855
2012 12856
2013 12867
2014 12887
2015 12777
2016 12454
2017 12399
2018 12423
2019 12417

Race Demographics

Category Percentage
non_hispanic_white_alone_male 44.9%
non_hispanic_white_alone_female 43.5%
black_alone_male 6.9%
black_alone_female 0.2%
asian_alone_male 0.1%
asian_alone_female 0.2%
hispanic_male 2.2%
hispanic_female 1.0%

Age Demographics

Category Percentage
0-4 4.7%
5-9 5.0%
10-14 5.3%
15-19 5.7%
20-24 5.8%
25-29 6.5%
30-34 6.2%
35-39 6.1%
40-44 5.9%
45-49 6.1%
50-54 6.6%
55-59 7.0%
60-64 7.1%
65-69 6.4%
70-74 6.1%
75-79 4.3%
80-84 2.8%
85+ 2.3%

Additional Information

  • Average Income: 35956
  • Number of Police officers: 17
  • Johnson County FIPS code: 17087

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Source: Census.gov, Wikipedia.org