Johnson County, Iowa Population 2022

Johnson County, Iowa's estimated population is 152,913 with a growth rate of 0.39% in the past year according to the most recent United States census data. Johnson County, Iowa is the 5th largest county in Iowa. The 2010 Population was 131,337 and has seen a growth of 16.43% since this time.

Note: 2021 and 2022 data is projected
Year Population Growth Annual Growth Rate
18401,4910.00%
18504,4722,981199.93%
186017,57313,101292.96%
187024,8987,32541.68%
188025,4295312.13%
189023,082-2,347-9.23%
190024,8171,7357.52%
191025,9141,0974.42%
192026,4625482.11%
193030,2763,81414.41%
194033,1912,9159.63%
195045,75612,56537.86%
196053,6637,90717.28%
197072,12718,46434.41%
198081,7179,59013.30%
199096,11914,40217.62%
2010131,33735,21836.64%
2011134,0862,7492.09%
2012137,1033,0172.25%
2013140,1513,0482.22%
2014142,7302,5791.84%
2015144,9432,2131.55%
2016146,9281,9851.37%
2017149,3252,3971.63%
2018150,5491,2240.82%
2019151,1405910.39%
2020151,7315910.39%
2021152,3225910.39%
2022152,9135910.39%
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Johnson County, Iowa Population Growth

Population by Race

Race Population Percentage
White121,69480.69%
Black or African American11,5097.63%
American Indian and Alaska Native2710.18%
Asian9,3466.20%
Native Hawaiian and Other Pacific Islander740.05%
Some Other Race2,5101.66%
Two or More Races5,4153.59%
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Johnson County, Iowa Population by Race

Johnson County, Iowa Population Pyramid 2022

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Johnson County, Iowa Median Age

30.4


Total

30.1


Male

30.8


Female

Johnson County, Iowa Adults

There are 120,765 adults, (17,513 of whom are seniors) in Johnson County, Iowa.

Johnson County, Iowa Age Dependency

Age Dependency Ratio

17

Old Age Dependency Ratio

29.1

Child Dependency Ratio

Johnson County, Iowa Sex Ratio

Female

76,013

50.40%

Male

74,806

49.60%

Johnson County, Iowa Population by Age

Johnson County, Iowa Renter vs Owner Occupied by Household Type

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Johnson County, Iowa Household Types

Type Owner Renter
Married83.1%16.9%
Male66%34%
All58.6%41.4%
Female52.6%47.4%
Non Family35.4%64.6%

58.6%

Rate of Home Ownership

Johnson County, Iowa Households and Families

Type Count Average Size Owned
All60,4302.3758.6
Married26,9453.0383.1
Male1,4543.2266
Female4,3012.9852.6
Non Family27,7301.5935.4

2.97

Average Family Size

2.37

Average Household Size

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Johnson County, Iowa Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1,7822.00%
9th to 12th Grade2,0312.27%
High School Graduate14,10015.79%
Some College15,34617.19%
Associates Degree7,5398.44%
Bachelors Degree25,95229.06%
Graduate Degree22,54225.25%
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Johnson County, Iowa Educational Attainment by Sex (over 25)

Johnson County, Iowa Educational Attainment by Race

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Race Total High School Bachelors
Asian5,0024,9023,866
White72,42370,46040,819
2+ Races2,2172,0791,227
Native American18617798
Hispanic4,2233,2211,404
Other Race1,442834406
Black5,6925,0981,287
Islander5750

The highest rate of high school graduation is among asian people with a rate of 98.00%.

The highest rate of bachelors degrees is among asian people with a rate of 77.29%.

Johnson County, Iowa Educational Attainment by Race

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Name Average Male Female
Overall$46,081$51,473$40,196
Less Than 9th Grade$25,780$34,424$16,586
High School Graduate$29,824$37,713$24,963
Some College$38,787$45,948$31,005
Bachelors Degree$47,183$53,065$40,627
Graduate Degree$66,026$71,626$62,784

$46,081

Average Earnings

$51,473

Average Male

$40,196

Average Female

Johnson County, Iowa Earnings by Educational Attainment

Johnson County, Iowa Language by Age

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Johnson County, Iowa Language

84.60% of Johnson County, Iowa residents speak only English, while 15.40% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 4.23% of the population.

Johnson County, Iowa Language

Johnson County, Iowa Poverty by Race

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Name Total In Poverty Poverty Rate
Islander745067.57%
Asian9,1052,76430.36%
Black10,8512,91826.89%
Hispanic8,0481,44017.89%
White110,91316,77615.13%
Other371NaN%
Multiple5,16776214.75%

17.20%

Overall Poverty Rate

16.91%

Male Poverty Rate

17.49%

Female Poverty Rate

Poverty in Johnson County, Iowa

The race most likely to be in poverty in Johnson County, Iowa is Islander, with 67.57% below the poverty level.

The race least likely to be in poverty in Johnson County, Iowa is Multiple, with 14.75% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 1.82%. Among those working part-time, it was 35.05%, and for those that did not work, the poverty rate was 27.02%.

Johnson County, Iowa Poverty

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Name Poverty
Less Than 9th Grade16.59%
High School13.38%
Some College8.58%
Bachelors or Greater6.22%

Johnson County, Iowa Poverty Rate by Education

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Rate Poverty
Male Employed10.56%
Male Unemployed48.42%
Female Employed14.22%
Female Unemployed39.21%

Johnson County, Iowa Poverty Rate by Employment Status and Sex

Johnson County, Iowa Income by Household Type

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Name Median Mean
Households$63,062$87,900
Families$97,891$119,148
Married Families$107,638$132,506
Non Families$34,719$49,286
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Income by Household Type

Johnson County, Iowa Marital Status

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Marriage Rates

45.1%

Overall Marriage Rate

45.8%

Male Marriage Rate

44.5%

Female Marriage Rate

Johnson County, Iowa Married by Age and Sex

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Johnson County, Iowa 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 35-44.

Johnson County, Iowa Marital Status by Race

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Johnson County, Iowa Marital Status

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5,006

Number of Veterans

Male Veterans

Female Veterans

War Veterans
Second Gulf War1,134
First Gulf War1,082
Vietnam1,498
Korea600
World War II89

Johnson County, Iowa Veterans by War

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Age Group Veterans
18 to 34617
35 to 541,186
55 to 64628
65 to 741,229
75+1,346

Johnson County, Iowa Veterans by Age

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Name Veterans % of Total
White4,7784.78%
Black1131.45%
Native American104.48%
Asian510.66%
Islander712.28%
2+ Races471.59%
Hispanic1542.56%

Johnson County, Iowa Veterans by Race

Johnson County, Iowa Veterans by Education

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8.90%

Veteran Poverty Rate

18.35%

Veteran Disability Rate

Johnson County, Iowa Veterans by Education

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70.1%

Labor Force Participation

67.4%

Employment Rate

3.7%

Unemployment Rate

Johnson County, Iowa Employment by Age

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Johnson County, Iowa Employment by Race

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Johnson County, Iowa Employment by Education

Origin of Non-Citizens

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

Origin of Naturalized Citizens

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56.00%

Born in Johnson County, Iowa

88.44%

Native Born

11.56%

Foreign Born

7.98%

Non Citizen

3.58%

Naturalized

Place of Birth

88.44% of Johnson County, Iowa residents were born in the United States, with 56.00% having been born in Iowa. 7.98% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Johnson County, Iowa Place of Birth

  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

Sources