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COUNTY · 2000 CENSUS

Johnson County

Iowa · 111,006 residents · 612.997 sq mi
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The short version

Johnson County has roughly average household income, with a median household income of $40,060. Population has grown 15% since 1990. 48% of adults hold a bachelor's degree or higher, well above the national rate of 24%. Median home value has risen by half since 1990, reaching $123,700. At a median age of 28.4, residents skew younger than the country as a whole.

At a glance
Lower income
below the US median
US median: $42,589
Younger
median age 28.4
US median: 35.2
More educated
48% hold a bachelor's degree
US average: 24%
Stable housing
home values roughly flat, inflation adjusted
US median home: $120,530
Section 01

Population & growth

Total population
111,006
+15%since 1990
from 96,119 in 1990
1990 – 2025
Population density
181 / sq mi
+15%since 1990
from 157 / sq mi in 1990
US average: 242
Median age
28.4
+4%since 1990
from 27.3 in 1990
US average: 35.2
Population, 1990 – 2024
90K108K126K145K163K1990201020202024Johnson County
2024157K
1990201020202024
Section 02

Income & economy

Median household income
$40,060
+9%inflation adjusted, since 1990
from $27,862 in 1990
US average: $42,589
1990 – 2024
Per capita income
$22,220
+57%since 1990
from $14,113 in 1990
US average: $21,522
Poverty rate
15.0%
−2.1 ptssince 1990
from 17.1% in 1990
US average: 12.4%
Section 03

Housing

Median home value
$123,700
+23%inflation adjusted, since 1990
from $76,600 in 1990
US average: $120,530
1990 – 2024
Median gross rent
$564
+4%inflation adjusted, since 1990
from $412 in 1990
US average: $602
Owner-occupied
56.6%
+4.0 ptssince 1990
from 52.7% in 1990
43.4% rent
Afford Score
3.1
+12%since 1990
from 2.7 in 1990
1990 – 2024
RELATED:See current rent listings in Johnson County on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic93.5%(89,835)
Black2.1%(2,010)
Hispanic / Latino1.2%(1,186)
Asian3.9%(3,731)
Diversity Score18.2%(17,490)
2000
White, non-Hispanic88.8%(98,619)
Black2.8%(3,148)
Hispanic / Latino2.5%(2,781)
Asian4.1%(4,557)
Diversity Score22.5%(24,942)
Diversity Score
22
+23%since 1990
from 18 in 1990
1990 – 2024
Section 05

Education

Bachelor's degree or higher
47.6%
+3.6 ptssince 1990
from 44.0% in 1990
US average: 24.4%
High school or higher
93.7%
+3.1 ptssince 1990
from 90.6% in 1990
US average: 80.3%
Graduate degree
21.4%
+1.5 ptssince 1990
from 20.0% in 1990
US average: 8.8%
Section 06

Commute & transportation

Average commute
11.0 min
−38%since 1990
from 17.7 min in 1990
US average: 17.6
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to Johnson County

Mesa County
Pop 162,845
Sumter County
Pop 157,772
Washington County
Pop 157,731
Madera County
Pop 167,927
Places similar to Johnson County
Head to head

Compare Johnson County to nearby counties

JOHNSON COUNTY VS
Iowa County
Income$71,223+78%
Home value$193,900+57%
Population16,504−90%
SEE FULL COMPARISON →
JOHNSON COUNTY VS
Washington County
Income$75,647+89%
Home value$203,900+65%
Population22,667−86%
SEE FULL COMPARISON →
JOHNSON COUNTY VS
Cedar County
Income$80,602+101%
Home value$211,300+71%
Population18,359−89%
SEE FULL COMPARISON →
JOHNSON COUNTY VS
Muscatine County
Income$69,396+73%
Home value$182,100+47%
Population41,853−74%
SEE FULL COMPARISON →
Frequently asked

How many people live in Johnson County, Iowa?

Johnson County, Iowa has about 111,006 residents according to the 2000 Census.

What is the median household income in Johnson County, Iowa?

The typical household in Johnson County, Iowa earns about $40,060 a year. Half of households make more than that, and half make less.

Is Johnson County, Iowa expensive?

In Johnson County, Iowa, the median home is worth about $123,700, and the typical rent is about $564 a month.

How educated are people in Johnson County, Iowa?

About 47.6% of adults age 25 and over in Johnson County, Iowa hold a bachelor's degree or higher.

What is the poverty rate in Johnson County, Iowa?

About 15.0% of people in Johnson County, Iowa live below the federal poverty line.

Has Johnson County, Iowa grown since 1990?

Yes, Johnson County, Iowa has grown since 1990. The population has added about 14,887 residents, a change of about 15 percent over that period.

Keep going

Explore from here

36 census tracts (top 20 by population)
Census Tract 103.03Census Tract 101Census Tract 103.04Census Tract 1Census Tract 103.05Census Tract 105.01Census Tract 18.01Census Tract 103.08Census Tract 102Census Tract 4.02Census Tract 21Census Tract 5.01Census Tract 11Census Tract 18.02Census Tract 14Census Tract 3.05Census Tract 2Census Tract 3.06Census Tract 23Census Tract 16.01
13 ZIP codes
ZIP 52240ZIP 52241ZIP 52317ZIP 52245ZIP 52246ZIP 52333ZIP 52340ZIP 52247ZIP 52242ZIP 52338ZIP 52322ZIP 52755ZIP 52235
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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