United States › Iowa › Johnston CITY · 2000 CENSUS
Johnston Iowa · 8,649 residents · 19.5 sq mi
Time machine
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The short version
Johnston is a city of 8,649 people in Iowa. Households here earn about 93% more than in Iowa as a whole. The population has more than doubled since 1990, adding 3,947 people. This is an unusually credentialed place: 50% of adults have a four-year degree. Median household income runs $76,094, well clear of the $42,589 US median. The typical home is worth $187,400, having more than doubled since 1990.
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 from 35.1 in 1990
US average: 35.2
Population, 1990 – 2024
3K 9K 15K 20K 26K 1990 2000 2010 2020 2024 Johnston Age distribution, 2000
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $76,094
+34%inflation adjusted, since 1990
from $43,036 in 1990
US average: $42,589
from $19,685 in 1990
US average: $21,522
from 5.4% in 1990
US average: 12.4%
$187,400
+48%inflation adjusted, since 1990
from $96,000 in 1990
US average: $120,530
$727
−4%inflation adjusted, since 1990
from $573 in 1990
US average: $602
from 63.7% in 1990
26.0% rent
Section 04
Race & ethnicity 1990
White, non-Hispanic 98.8%(4,645)
Hispanic / Latino 1.3%(61)
2000
White, non-Hispanic 95.3%(8,246)
Hispanic / Latino 1.5%(132)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Detailed origin tables are available for 2024; showing 2024 data.
Ancestry
+ 23 more ancestry groups with data from 33.8% in 1990
US average: 24.4%
High school or higher
from 92.5% in 1990
US average: 80.3%
from 12.1% in 1990
US average: 8.8%
Section 06
Commute & transportation 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.
Marital status
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
Section 09
Health coverage Showing 2024 (the nearest year with coverage data).
from 5.4% in 2013
US average: 8.4%
from 78.6% in 2020
US average: 54.8%
Direct-purchase
from 12.0% in 2020
US average: 13.8%
from 15.3% in 2020
US average: 18.4%
from 7.8% in 2020
US average: 20.9%
VA health care
from 2.9% in 2020
US average: 2.2%
Any private
from 87.9% in 2020
US average: 67.1%
Any public
from 22.8% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 19.8%(164)
Gulf War (1990s) 20.6%(171)
Share of the 830 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper
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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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