Johnson County, Illinois Population 2023

13,527

Johnson County, Illinois's estimated 2023 population is 13,527 with a growth rate of 0.54% in the past year according to the most recent United States census data. Johnson County, Illinois is the 77th largest county in Illinois. The 2010 population was 12,582 and has seen a growth of 7.51% since that time.

Note: data after 2021 is projected based on recent change

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Year
Population
Growth
Growth Rate
201012,582
201112,655730.58%
201212,728730.58%
201312,801730.57%
201412,874730.57%
201512,947730.57%
201613,020730.56%
201713,093730.56%
201813,166730.56%
201913,239730.55%
202013,308690.52%
202113,381730.55%
202213,454730.55%
202313,527730.54%
showing: 14 rows
2023 Growth Rate
0.54% (73)
Founded
1812
County Seat
Vienna
2010 Population
12,582
Growth Since 2010
7.51% (945)

Johnson County, Illinois Population 2023

Population by Race

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Race
Population
Percentage (of total)
White11,64087.93%
Black or African American1,2059.1%
Two or more races2151.62%
Other race1401.06%
Asian380.29%
Native American
Native Hawaiian or Pacific Islander
showing: 7 rows

White

Black or African American

Two or more races

Other race

Asian

Native American

Native Hawaiian or Pacific Islander

Johnson County, Illinois Population by Race

Johnson County, Illinois Population Pyramid 2023

Johnson County, Illinois Median Age

43.4

Total

41.9

Male

47

Female

Johnson County, Illinois Adults

There are 10,690 adults, (2,794 of whom are seniors) in Johnson County, Illinois.

Johnson County, Illinois Age Dependency

67.7

Age Dependency Ratio

35.4

Old Age Dependency Ratio

32.3

Child Dependency Ratio

Johnson County, Illinois Sex Ratio

Female5,97945.17%
Male7,25954.83%

Johnson County, Illinois Population by Age

Johnson County, Illinois Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All4,0552.7285.314.7
Married2,2893.1994.55.5
Non Family1,1911.2275.824.2
Female4393.4965.834.2
Male1365.387525
showing: 5 rows

3.19

Average Family Size

2.72

Average Household Size

85.3%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Johnson County, Illinois Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Johnson County, Illinois Educational Attainment by Sex (over 25)

Johnson County, Illinois Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among asian people with a rate of 93.33%.

The highest rate of bachelors degrees is among asian people with a rate of 30%.

Johnson County, Illinois Educational Attainment by Race

All

Male

Female

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$36,402

Average Earnings

$46,087

Average Male

$30,725

Average Female

Johnson County, Illinois Earnings by Educational Attainment

Johnson County, Illinois Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Johnson County, Illinois Language

97.03% of Johnson County, Illinois residents speak only English, while 2.97% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 1.69% of the population.

Johnson County, Illinois Language

Johnson County, Illinois Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White10,5491,42013.46%
Multiple1946835.05%
Hispanic213177.98%
Asian22627.27%
Black6233.33%
showing: 5 rows

13.74%

Overall Poverty Rate

11.34%

Male Poverty Rate

15.8%

Female Poverty Rate

Poverty in Johnson County, Illinois

The race most likely to be in poverty in Johnson County, Illinois is Multiple, with 35.05% below the poverty level.

The race least likely to be in poverty in Johnson County, Illinois is Hispanic, with 7.98% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 5.41%. Among those working part-time, it was 11.68%, and for those that did not work, the poverty rate was 15.68%.

Johnson County, Illinois Poverty

rate

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Rate
Poverty
Less Than 9th Grade19.89%
High School14.3%
Some College9.79%
Bachelors or Greater4.8%
showing: 4 rows

Johnson County, Illinois Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed20.77%
Female Unemployed12.82%
Female Employed9.94%
Male Employed5.08%
showing: 4 rows

Johnson County, Illinois Poverty Rate by Employment Status and Sex

Johnson County, Illinois Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Johnson County, Illinois Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

45.2%

Overall Marriage Rate

39.2%

Male Marriage Rate

53.0%

Female Marriage Rate

Johnson County, Illinois Married by Age and Sex

male

female

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 45-54.

Johnson County, Illinois Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Johnson County, Illinois Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

935

Number of Veterans

889

Male Veterans

46

Female Veterans

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Johnson County, Illinois Veterans by War

count

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Johnson County, Illinois Veterans by Age

count

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Johnson County, Illinois Veterans by Race

Johnson County, Illinois Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

9.26%

Veteran Poverty Rate

37.02%

Veteran Disability Rate

Johnson County, Illinois Veterans by Education

LaborForceParticipation

39.2%

Labor Force Participation

37.7%

Employment Rate

3.9%

Unemployment Rate

Johnson County, Illinois Employment by Age

LaborForceParticipation

Johnson County, Illinois Employment by Race

LaborForceParticipation

Johnson County, Illinois Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

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

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

88.35%

Born in Johnson County, Illinois

119.82%

Native Born

1.36%

Foreign Born

0.87%

Non Citizen

0.49%

Naturalized

Place of Birth

119.82% of Johnson County, Illinois residents were born in the United States, with 88.35% having been born in Illinois. 0.87% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Johnson County, Illinois Place of Birth

Sources