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CITY · 2000 CENSUS

Johnston

Iowa · 8,649 residents · 19.49 sq mi
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The short version

Johnston is significantly wealthier than the US average, with a median household income of $76,094. The city has grown rapidly, with population up 84% since 1990. 50% of adults hold a bachelor's degree or higher, well above the national rate of 24%. Median home value has more than doubled since 1990, reaching $187,400. Poverty is rare here, at 4.1% of residents. Households here earn about 93% more than the Iowa median.

At a glance
Wealthier
above the US median
US median: $42,589
Mid-age
median age 36.3
US median: 35.2
More educated
50% hold a bachelor's degree
US average: 24%
Less affordable
home values up 48%, inflation adjusted
US median home: $120,530
Section 01

Population & growth

8,649
+84%since 1990
from 4,702 in 1990
1990 – 2025
444 / sq mi
+84%since 1990
from 241 / sq mi in 1990
US average: 242
36.3
+3%since 1990
from 35.1 in 1990
US average: 35.2
Population, 19902024
3K9K15K20K26K1990201020202024Johnston
202424K
1990201020202024
Section 02

Income & economy

$76,094
+34%inflation adjusted, since 1990
from $43,036 in 1990
US average: $42,589
1990 – 2024
$36,407
+85%since 1990
from $19,685 in 1990
US average: $21,522
4.1%
−1.3 ptssince 1990
from 5.4% in 1990
US average: 12.4%
Section 03

Housing

$187,400
+48%inflation adjusted, since 1990
from $96,000 in 1990
US average: $120,530
1990 – 2024
$727
−4%inflation adjusted, since 1990
from $573 in 1990
US average: $602
74.0%
+10.3 ptssince 1990
from 63.7% in 1990
26.0% rent
2.5
+10%since 1990
from 2.2 in 1990
1990 – 2024
RELATED:See current rent listings in Johnston on RentDataNow
Section 04

Race & ethnicity

1990
White, non-Hispanic98.8%(4,645)
Black0%(0)
Hispanic / Latino1.3%(61)
Asian0.5%(22)
Diversity Score6.1%(286)
2000
White, non-Hispanic95.3%(8,246)
Black0.6%(50)
Hispanic / Latino1.5%(132)
Asian2%(171)
Diversity Score10%(862)
10
+64%since 1990
from 6 in 1990
1990 – 2024
Section 05

Education

49.9%
+16.1 ptssince 1990
from 33.8% in 1990
US average: 24.4%
High school or higher
94.7%
+2.2 ptssince 1990
from 92.5% in 1990
US average: 80.3%
15.3%
+3.2 ptssince 1990
from 12.1% in 1990
US average: 8.8%
Section 06

Commute & transportation

10.5 min
−41%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.

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Frequently asked

How many people live in Johnston, Iowa?

Johnston, Iowa has about 8,649 residents according to the 2000 Census.

What is the median household income in Johnston, Iowa?

The typical household in Johnston, Iowa earns about $76,094 a year. Half of households make more than that, and half make less.

Is Johnston, Iowa expensive?

In Johnston, Iowa, the median home is worth about $187,400, and the typical rent is about $727 a month.

How educated are people in Johnston, Iowa?

About 49.9% of adults age 25 and over in Johnston, Iowa hold a bachelor's degree or higher.

What is the poverty rate in Johnston, Iowa?

About 4.1% of people in Johnston, Iowa live below the federal poverty line.

Has Johnston, Iowa grown since 1990?

Yes, Johnston, Iowa has grown since 1990. The population has added about 3,947 residents, a change of about 84 percent over that period.

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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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