COUNTY
Washington County
Iowa · 22,667 residents (2025 est.) · 568.828 sq mi
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The short version
Washington County has roughly average household income, with a median household income of $75,647. Population has held roughly steady since 2000. Median home value has more than doubled since 2000, reaching $203,900. It sits in the top 10% of US counties for household income.
At a glance
Lower income
below the US median
US median: $82,259
Mid-age
median age 40.7
US median: 38.9
Less educated
26% hold a bachelor's degree
US average: 36%
Less affordable
home values up 33%, inflation adjusted
US median home: $376,019
Section 01
Population & growth
PEP 2025 EST:22,667 residents (Census Bureau Vintage 2025, released March 2026)
Population, 1990 – 2024
202423K
Age distribution, 2024
Under 56.4%(1,451)
5 to 95.4%(1,222)
10 to 148.4%(1,885)
15 to 196.4%(1,436)
20 to 245.2%(1,177)
25 to 3411.3%(2,549)
35 to 4412.4%(2,788)
45 to 5411.2%(2,516)
55 to 6413.3%(2,999)
65 to 7411.2%(2,519)
75 to 846.6%(1,493)
85 and over2.3%(526)
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy
$75,647
+6%inflation adjusted, since 2000
from $39,103 in 2000
US average: $82,259
1990 – 2024
Households earning $100K+
50.6%
+25.7 ptssince 2009
from 25.0% in 2009
US average: 53.3%
Workforce by industry, 2024
Information12.1%
Wholesale trade9.4%
Retail trade9%
Agriculture, forestry, fishing5.7%
Construction5.7%
Other services5.2%
Finance & insurance4.8%
Public administration4.2%
Professional, scientific, technical3.8%
Transportation & warehousing3.8%
Arts, entertainment, food2%
Education & health services1%
Manufacturing0.1%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03
Housing
$203,900
+33%inflation adjusted, since 2000
from $84,200 in 2000
US average: $376,019
1990 – 2024
2.7
+15%since 2009
from 2.3 in 2009
2009 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
52
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Washington County on RentDataNow
Section 04
Race & ethnicity
2000
White, non-Hispanic96%(19,838)
Black0.3%(58)
Hispanic / Latino2.7%(564)
Asian0.2%(51)
Other0%
2024
White, non-Hispanic88.7%(20,008)
Black1%(236)
Hispanic / Latino7.8%(1,749)
Asian0.4%(87)
Other2.1%(481)
26
+77%since 2009
from 15 in 2009
2009 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
24
−19%since 2020
from 30 in 2020
Our index, 0 to 100. Higher means White and non-White residents are more separated across neighborhoods.
Section 04 · Origins
Detailed origins & ancestry
Hispanic origin
Mexican5.6%(1,261)
Central American0.6%(127)
Puerto Rican0.3%(74)
Guatemalan0.3%(60)
Salvadoran0.2%(50)
Honduran0.1%(17)
Spaniard0%(10)
Ancestry
German29%(6,538)
Irish11.9%(2,683)
English9.5%(2,147)
American5.9%(1,331)
Swiss3.8%(851)
Norwegian2.1%(467)
Dutch1.9%(423)
Scottish1.8%(417)
French1.8%(416)
Czech1.8%(410)
Swedish1.6%(362)
Polish1%(233)
+ 23 more ancestry groups with data
Danish0.9%(199)
Welsh0.7%(160)
Italian0.7%(153)
Scotch-Irish0.6%(127)
Subsaharan African0.4%(91)
British0.4%(84)
Greek0.2%(41)
Belgian0.2%(39)
Slovene0.2%(38)
French Canadian0.2%(35)
Brazilian0.1%(24)
Croatian0.1%(22)
Guyanese0.1%(16)
Lithuanian0.1%(16)
Nigerian0.1%(16)
Romanian0.1%(13)
Finnish0%(11)
Canadian0%(9)
Hungarian0%(4)
Australian0%(2)
Bulgarian0%(2)
Austrian0%(1)
Turkish0%(1)
Section 05
Education
High school or higher
93.5%
+11.0 ptssince 2000
from 82.5% in 2000
US average: 89.6%
Section 06
Commute & transportation
Section 07
Work & employment
Section 08
People & community
Marital status
Men 15+
Never married28.9%(2,574)
Married60.3%(5,378)
Widowed2.2%(198)
Divorced8.6%(764)
Women 15+
Never married22.5%(2,041)
Married54%(4,911)
Widowed9.1%(825)
Divorced14.4%(1,312)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Drill deeper
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Compare Washington County to nearby counties
WASHINGTON COUNTY VS
Keokuk County
Income$62,329−18%
Home value$118,700−42%
Population9,797−57%
SEE FULL COMPARISON →
WASHINGTON COUNTY VS
Johnson County
Income$74,935−1%
Home value$308,600+51%
Population160,044+606%
SEE FULL COMPARISON →
WASHINGTON COUNTY VS
Louisa County
Income$77,354+2%
Home value$150,100−26%
Population10,416−54%
SEE FULL COMPARISON →
WASHINGTON COUNTY VS
Henry County
Income$67,436−11%
Home value$164,300−19%
Population19,349−15%
SEE FULL COMPARISON →
Frequently asked
How many people live in Washington County, Iowa?
Washington County, Iowa has about 22,561 residents according to the 2024 American Community Survey.
What is the median household income in Washington County, Iowa?
The typical household in Washington County, Iowa earns about $75,647 a year. Half of households make more than that, and half make less.
Is Washington County, Iowa expensive?
In Washington County, Iowa, the median home is worth about $203,900, and the typical rent is about $879 a month.
How educated are people in Washington County, Iowa?
About 26.2% of adults age 25 and over in Washington County, Iowa hold a bachelor's degree or higher.
What is the poverty rate in Washington County, Iowa?
About 8.2% of people in Washington County, Iowa live below the federal poverty line.
Has Washington County, Iowa grown since 1990?
Yes, Washington County, Iowa has grown since 1990. The population has added about 2,949 residents, a change of about 15 percent over that period.
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024