Johnson County, Illinois Population 2020

Johnson County, Illinois's estimated population is 12,425 with a growth rate of -0.26% in the past year according to the most recent United States census data. Johnson County, Illinois is the 82nd largest county in Illinois.

Year Population Growth Growth Rate
201812,456310.25%
201712,425-32-0.26%
201612,457-323-2.53%
201512,780-110-0.85%
201412,890220.17%
201312,86880.06%
201212,86060.05%
201112,8542461.95%
201012,6081,26111.11%
199011,3471,72317.90%
19809,6242,07427.47%
19707,5506228.98%
19606,928-1,801-20.63%
19508,729-1,998-18.63%
194010,7275245.14%
193010,203-1,819-15.13%
192012,022-2,309-16.11%
191014,331-1,336-8.53%
190015,6676544.36%
189015,0131,93514.80%
188013,0781,83016.27%
187011,2481,90620.40%
18609,3425,228127.08%
18504,11448813.46%
18403,6262,030127.19%
18301,59675389.32%
18208430.00%

How Many People Live in Johnson County, Illinois?

12,425

Population by Race

Race Population Percentage
White11,01387.39%
Black or African American1,48611.79%
Asian440.35%
Two or More Races320.25%
Some Other Race140.11%
American Indian and Alaska Native130.10%

Johnson County, Illinois Population Pyramid 2020

Johnson County, Illinois Median Age

43.2


Total

40.4


Male

47.2


Female

Johnson County, Illinois Adults

There are 10,273 adults, (2,572 of whom are seniors) in Johnson County, Illinois.

Johnson County, Illinois Age Dependency

63.6

Age Dependency Ratio

33.4

Old Age Dependency Ratio

30.2

Child Dependency Ratio

Johnson County, Illinois Sex Ratio

Female

5,587

44.33%

Male

7,015

55.67%

Johnson County, Illinois Households and Families

Johnson County, Illinois Renter vs Owner Occupied by Household Type

Johnson County, Illinois Household Types

Type Owner Renter
Married94.5%5.5%
All84.1%15.9%
Non Family71.9%28.1%
Female68.6%31.4%
Male65.4%34.6%

84.1%

Rate of Home Ownership

Type Count Average Size Owned
All4,3422.3884.1
Married2,4692.8794.5
Non Family1,2841.1671.9
Female3982.8168.6
Male1913.4565.4

2.82

Average Family Size

2.38

Average Household Size

4.4%

Unmarried (Opposite Sex)

0%

Unmarried (Same Sex)

Johnson County, Illinois Education

Education Attained Count Percentage
Less Than 9th Grade4444.81%
9th to 12th Grade1,19512.95%
High School Graduate2,91031.53%
Some College2,39025.90%
Associates Degree7648.28%
Bachelors Degree1,07211.62%
Graduate Degree4544.92%

Johnson County, Illinois Educational Attainment by Race

Name Total High School Bachelors
White7,6626,7741,502
Black1,2436887
Hispanic287998
Asian32306
Multiple Races1483
Other Race1111
Native American99

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among multiple races people with a rate of 21.43%.

Name Average Male Female
Overall$38,797$45,568$31,018
Less Than High School$20,776$25,100$20,313
High School Grad$29,673$41,170$16,920
Some College$36,948$53,265$30,337
Bachelors Degree$46,821$56,250$41,071
Graduate Degree$56,525$44,375$57,097

$38,797

Average Earnings

$45,568

Average Male

$31,018

Average Female

Johnson County, Illinois Language

Johnson County, Illinois Language by Age

Johnson County, Illinois Language

97.00% of Johnson County, Illinois residents speak only English, while 3.00% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 2.21% of the population.

Johnson County, Illinois Poverty

Johnson County, Illinois Poverty by Race

Name Total In Poverty Poverty Rate
White10,0751,16311.54%
Hispanic1453222.07%
Multiple321031.25%
Asian32721.88%
Black14321.43%

11.75%

Overall Poverty Rate

9.84%

Male Poverty Rate

13.40%

Female Poverty Rate

Poverty in Johnson County, Illinois

The race most likely to be in poverty in Johnson County, Illinois is Multiple, with 31.25% below the poverty level.

The race least likely to be in poverty in Johnson County, Illinois is White, with 11.54% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.91%. Among those working part-time, it was 15.01%, and for those that did not work, the poverty rate was 15.49%.

Name Poverty
Less Than High School24.58%
High School11.80%
Some College9.77%
Bachelors or Greater3.16%
Name Poverty
Male Unemployed29.46%
Female Unemployed21.95%
Female Employed6.93%
Male Employed3.45%

Johnson County, Illinois Income

Johnson County, Illinois Income by Household Type

Name Median Mean
Households$50,923$65,981
Families$63,174$77,421
Married Families$68,244-
Non Families$25,321$34,580

Johnson County, Illinois Marital Status

Johnson County, Illinois Marital Status

Marriage Rates

51.5%

Overall Marriage Rate

45.1%

Male Marriage Rate

59.9%

Female Marriage Rate

Johnson County, Illinois Married by Age and Sex

Johnson County, Illinois Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 55-64.

Johnson County, Illinois Marital Status by Race

Johnson County, Illinois Veterans

997

Number of Veterans

954

Male Veterans

43

Female Veterans

War Veterans
Vietnam364
First Gulf War158
Korea146
Second Gulf War65
World War II53

Johnson County, Illinois Veterans by Race

Name Veterans % of Total
White98111.28%
Black120.81%
Indian323.08%
2 or More15.88%

Johnson County, Illinois Veterans by Education

10.33%

Veteran Poverty Rate

31.51%

Veteran Disability Rate

Johnson County, Illinois Employment Status

38.9%

Labor Force Participation

36.6%

Employment Rate

5.7%

Unemployment Rate

Johnson County, Illinois Place of Birth

Origin of Non Citizens

Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

74.05%

Born in Illinois

98.31%

Native Born

1.69%

Foreign Born

1.05%

Non Citizen

Place of Birth

98.31% of Johnson County, Illinois residents were born in the United States, with 74.05% having been born in Illinois. 1.05% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Population of Cities in Johnson County, Illinois

City 2010 Census 2016 Estimated Growth Growth Rate
Marion 17216178266103.54%
Vienna1434169726318.34%
Goreville10501069191.81%
Cypress23423841.71%
New Burnside21121431.42%
Buncombe20320631.48%
Belknap10410621.92%
Simpson606111.67%
  1. US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. Population of States and Counties of the United States: 1790 - 1990