Johnson County, Iowa Population 2018

Johnson County, Iowa's estimated population is 149,210 with a growth rate of 5.07% in the past year according to the most recent United States census data. Johnson County, Iowa is the 4th largest county in Iowa.

Year Population Growth Growth Rate
2017149,2107,2045.07%
2016142,006-4,627-3.16%
2016146,6332,1061.46%
2015144,5272,4271.71%
2014142,1002,4471.75%
2013139,6532,8702.10%
2012136,7833,1092.33%
2011133,6742,3811.81%
2010131,29335,17436.59%
199096,11914,40217.62%
198081,7179,59013.30%
197072,12718,46434.41%
196053,6637,90717.28%
195045,75612,56537.86%
194033,1912,9159.63%
193030,2763,81414.41%
192026,4625482.11%
191025,9141,0974.42%
190024,8171,7357.52%
189023,082-2,347-9.23%
188025,4295312.13%
187024,8987,32541.68%
186017,57313,101292.96%
18504,4722,981199.93%
18401,4910.00%

Johnson County, Iowa Population Growth

Population Data via

Population by Race

Race Population
White118,240
Asian8,737
Black or African American8,666
Two or More Races3,017
Some Other Race2,996
American Indian and Alaska Native199
Native Hawaiian and Other Pacific Islander151

Race Data via US Census (2016 ACS 5-Year Survey)

Johnson County, Iowa Population Pyramid 2018

0%5%10%15% Male Population0%5%10%15% Female Population80757065605550454035302520151050

Data via US Census (2016 ACS 5-Year Survey): Table S0101

Johnson County, Iowa Median Age

29.9


Total

29.7


Male

30.3


Female

Johnson County, Iowa Adults

There are 113,463 adults, (13,917 of which are seniors) in Johnson County, Iowa.

Johnson County, Iowa Age Dependency

42.8

Age Dependency Ratio

14

Old Age Dependency Ratio

28.7

Child Dependency Ratio

Johnson County, Iowa Sex Ratio

Female

71,597

50.42%

Male

70,409

49.58%

Johnson County, Iowa Households and Families

Johnson County, Iowa Renter vs Owner Occupied by Household Type

Johnson County, Iowa Household Types

Type Owner Renter
Married82.9%17.1%
All58.7%41.3%
Male53.1%46.9%
Female47.6%52.4%
Non Family37.7%62.3%

58.7%

Rate of Home Ownership

Johnson County, Iowa Households by Type

Type Count Average Size Owned
All56,5432.3658.7
Non Family25,4221.5337.7
Married24,6323.0382.9
Female4,3533.0847.6
Male2,1363.253.1

2.97

Average Family Size

2.36

Average Household Size

6.7%

Unmarried (Opposite Sex)

0.5%

Unmarried (Same Sex)

Johnson County, Iowa Households

Johnson County, Iowa Education

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

Education Attained Count Percentage
Less Than 9th Grade2,2632.72%
9th to 12th Grade2,1112.54%
High School Graduate13,71216.48%
Some College14,32817.22%
Associates Degree7,1598.61%
Bachelors Degree23,29428.00%
Graduate Degree20,32624.43%

Johnson County, Iowa Educational Attainment by Race

Name Total High School Bachelors
White69,73967,41137,200
Asian4,5394,3283,498
Black4,1203,5971,136
Hispanic3,6212,324973
Other Race1,610733110
Multiple Races982958692
Native American190190126
Islander6857

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 native american people with a rate of 77.07%.

Johnson County, Iowa Earnings by Educational Attainment

Name Average Male Female
Overall$42,206$47,797$37,317
Less Than High School$27,274$37,950$15,141
High School Grad$31,423$36,435$26,322
Some College$36,314$41,663$30,773
Bachelors Degree$45,314$50,246$41,409
Graduate Degree$60,721$67,524$54,585

$42,206

Average Earnings

$47,797

Average Male

$37,317

Average Female

Johnson County, Iowa Language

Johnson County, Iowa Language by Age

Johnson County, Iowa Language

86.42% of Johnson County, Iowa residents speak only English, while 13.58% speak other languages. The largest non-English language is Asian, which is spoken by 4.61% of the population.

Johnson County, Iowa Poverty

Johnson County, Iowa Poverty by Race

Name Total In Poverty Poverty Rate
White107,34515,68514.61%
Black8,2593,33240.34%
Asian8,3332,35528.26%
Hispanic7,0162,00928.63%
Other2,93798433.50%
Multiple2,82265323.14%
Islander1516039.74%
Native1872312.30%

17.88%

Overall Poverty Rate

17.45%

Male Poverty Rate

18.30%

Female Poverty Rate

Poverty in Johnson County, Iowa

The race most likely to be in poverty in Johnson County, Iowa is Black, with 40.34% below the poverty level.

The race least likely to be in poverty in Johnson County, Iowa is Native, with 12.30% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.27%. Among those working part-time, it was 37.66%, and for those that did not work, the poverty rate was 28.27%.

Johnson County, Iowa Poverty Rate by Education

Name Poverty
Less Than High School20.13%
High School11.41%
Some College10.39%
Bachelors or Greater5.83%

Johnson County, Iowa Poverty Rate by Employment Status and Sex

Name Poverty
Male Unemployed48.87%
Female Unemployed47.51%
Female Employed15.67%
Male Employed12.02%

Johnson County, Iowa Income

Johnson County, Iowa Income by Household Type

Name Median Mean
Households$56,808$79,008
Families$86,086$107,421
Married Families$98,938$119,946
Non Families$30,010$41,751

Johnson County, Iowa Marital Status

Johnson County, Iowa Marital Status

Marriage Rates

44.1%

Overall Marriage Rate

45.5%

Male Marriage Rate

42.8%

Female Marriage Rate

Johnson County, Iowa Married by Age and Sex

Johnson County, Iowa Marriage

The age group where males are most likely to be married is 55To64, while the female age group most likely to be married is 35To44.

Johnson County, Iowa Marital Status by Race

Johnson County, Iowa Veterans

Johnson County, Iowa Veterans by War

5,473

Number of Veterans

4,959

Male Veterans

514

Female Veterans

Name Veterans
Vietnam1,936
First Gulf War963
Second Gulf War712
Korea591
World War II356

Johnson County, Iowa Veterans by Age

Name Veterans
75+1,402
65 to 741,293
35 to 541,165
55 to 641,013
18 to 34600

Johnson County, Iowa Veterans by Race

Name Veterans % of Total
White5,2965.47%
Black711.26%
2 or More483.09%
Hispanic420.82%
Indian4120.60%
Asian170.24%

Johnson County, Iowa Veterans by Education

7.54%

Veteran Poverty Rate

20.88%

Veteran Disability Rate

Johnson County, Iowa Employment Status

Johnson County, Iowa Employment by Age

71.5%

Labor Force Participation

69.2%

Employment Rate

3.2%

Unemployment Rate

Johnson County, Iowa Employment by Race

Johnson County, Iowa Employment by Education

Population of Cities in Johnson County, Iowa

City 2010 Census 2016 Estimated Growth Growth Rate
Iowa City679467439864529.50%
Coralville189122039714857.85%
North Liberty1339118520512938.30%
Tiffin19473006105954.39%
Solon2078258750924.49%
West Branch 23222359371.59%
Lone Tree13021388866.61%
University Heights10511089383.62%
Swisher879924455.12%
Oxford80581160.75%
Hills70280810615.10%
Shueyville5666468014.13%
Data Sources
  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