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COUNTY · 1990 CENSUS

Washington County

Idaho · 8,550 residents · 1,452.852 sq mi
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The short version

Washington County has notably lower household income than the US average, with a median household income of $17,917. Population has declined 14% since 2000. 10% of adults hold a bachelor's degree or higher, below the national rate of 20%. Median home value is $43,700. Households here earn about 29% less than the Idaho median.

At a glance
Lower income
below the US median
US median: $30,130
Older
median age 37.0
US median: 33.0
Less educated
10% hold a bachelor's degree
US average: 20%
More affordable
home values down 37%, inflation adjusted
US median home: $93,722
Section 01

Population & growth

Total population
8,550
−14%vs 2000
vs 9,977 in 2000
1990 – 2025
Median age
37.0
−6%vs 2000
vs 39.2 in 2000
US average: 33.0
Population, 1990 – 2024
8K9K10K11K11K1990201020202024Washington County
202411K
1990201020202024
Age distribution, 1990
Under 56.9%(591)
US avg: 7.3%
5 to 98.9%(759)
US avg: 7.3%
10 to 148.4%(722)
US avg: 6.9%
15 to 196.8%(579)
US avg: 7.1%
20 to 243.8%(322)
US avg: 7.5%
25 to 3412.5%(1,072)
US avg: 17.5%
35 to 4412.9%(1,103)
US avg: 15.1%
45 to 5410%(857)
US avg: 10.2%
55 to 6410.1%(863)
US avg: 8.5%
65 to 7410.4%(886)
US avg: 7.3%
75 to 847.7%(655)
US avg: 4%
85 and over1.6%(141)
US avg: 1.2%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02

Income & economy

Median household income
$17,917
−23%inflation adjusted, since 2000
vs $30,625 in 2000
US average: $30,130
1990 – 2024
Per capita income
$9,088
−41%vs 2000
vs $15,464 in 2000
US average: $14,340
Poverty rate
19.6%
+6.3 ptsvs 2000
vs 13.3% in 2000
US average: 13.2%
Section 03

Housing

Median home value
$43,700
−37%inflation adjusted, since 2000
vs $91,800 in 2000
US average: $93,722
1990 – 2024
Median gross rent
$256
−26%inflation adjusted, since 2000
vs $457 in 2000
US average: $450
Owner-occupied
72.0%
−1.7 ptsvs 2000
vs 73.7% in 2000
28.0% rent
RELATED:See current rent listings in Washington County on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic83.1%(8,294)
Black0.1%(10)
Hispanic / Latino13.8%(1,372)
Asian1%(103)
Other0%
1990
White, non-Hispanic89.7%(7,672)
Black0%(0)
Hispanic / Latino10.3%(883)
Asian2.1%(177)
Other8.2%(701)

No data for the years selected.

Section 04 · Origins

Detailed origins & ancestry

Detailed origin tables are available for 2024; showing 2024 data.

Hispanic origin
Mexican15.6%(1,735)
Puerto Rican0.5%(61)
Spaniard0.2%(18)
Panamanian0.1%(12)
Asian origin
Filipino0.4%(49)
Japanese0.2%(18)
Asian Indian0.1%(14)
Ancestry
English17.7%(1,969)
German13%(1,454)
Irish12.6%(1,408)
American6.1%(680)
Swedish3.6%(397)
Scottish3.2%(354)
Dutch1.7%(186)
Italian1.5%(163)
Norwegian1.4%(158)
Danish1.2%(137)
Welsh1.2%(136)
French1.2%(130)
+ 20 more ancestry groups with data
Scotch-Irish0.9%(101)
Greek0.6%(68)
Russian0.6%(63)
Polish0.3%(28)
Canadian0.2%(23)
Portuguese0.2%(21)
Swiss0.2%(18)
British0.1%(15)
Slovak0.1%(12)
Ukrainian0.1%(10)
Armenian0.1%(9)
Romanian0.1%(9)
Haitian0.1%(8)
Finnish0%(5)
Czech0%(4)
Arab0%(2)
RANKED:Largest English population · Largest Mexican population · Largest German population · Largest Irish population · Largest American population
Section 05

Education

Bachelor's degree or higher
10.3%
−2.4 ptsvs 2000
vs 12.7% in 2000
US average: 20.3%
High school or higher
72.7%
−3.9 ptsvs 2000
vs 76.6% in 2000
US average: 75.2%
Graduate degree
3.4%
+0.5 ptsvs 2000
vs 2.9% in 2000
US average: 7.1%
Section 06

Commute & transportation

Average commute
18.3 min
+16%vs 2000
vs 15.8 min in 2000
US average: 21.9
Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Marital status (2024)
Men 15+
Never married27.7%(1,243)
Married57.8%(2,594)
Widowed2.3%(103)
Divorced12.2%(545)
Women 15+
Never married23.3%(1,073)
Married51%(2,351)
Widowed11.2%(516)
Divorced14.5%(666)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Drill deeper

Places similar to Washington County

Little River County
Pop 11,763
Prowers County
Pop 11,884
Evans County
Pop 11,028
Early County
Pop 10,455
Places similar to Washington County
Head to head

Compare Washington County to nearby counties

WASHINGTON COUNTY VS
Payette County
Income$67,673+278%
Home value$341,800+682%
Population27,824+140%
SEE FULL COMPARISON →
WASHINGTON COUNTY VS
Gem County
Income$64,605+261%
Home value$428,700+881%
Population21,773+88%
SEE FULL COMPARISON →
WASHINGTON COUNTY VS
Adams County
Income$61,808+245%
Home value$376,500+762%
Population5,013−57%
SEE FULL COMPARISON →
WASHINGTON COUNTY VS
Baker County
Income$60,936+240%
Home value$285,600+554%
Population16,658+44%
SEE FULL COMPARISON →
Frequently asked

How many people live in Washington County, Idaho?

Washington County, Idaho has about 8,550 residents according to the 1990 Census.

What is the median household income in Washington County, Idaho?

The typical household in Washington County, Idaho earns about $17,917 a year. Half of households make more than that, and half make less.

Is Washington County, Idaho expensive?

In Washington County, Idaho, the median home is worth about $43,700, and the typical rent is about $256 a month.

How educated are people in Washington County, Idaho?

About 10.3% of adults age 25 and over in Washington County, Idaho hold a bachelor's degree or higher.

What is the poverty rate in Washington County, Idaho?

About 19.6% of people in Washington County, Idaho live below the federal poverty line.

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Explore from here

3 census tracts
Census Tract 9703Census Tract 9702Census Tract 9701
3 ZIP codes
ZIP 83672ZIP 83610ZIP 83645
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →