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

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