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Washington County, ID
3 cities and towns and 3 ZIP codes in Washington County, Idaho.
Population
11,142
Land area
1,453sq mi
People per sq mi
8
ZIP codes
3
Cities and towns in Washington County
Washington County at a glance
- Washington County is 67% less dense than Idaho as a whole.
- The median household income is $54,000, 31% below the Idaho median of $77,800.
- A typical owner-occupied home is valued at $278,100 (34% below Idaho) and median rent is $938 a month.
- Its largest cities are Weiser (5,935), Midvale (347) and Cambridge (324).
Local data for Washington County, ID
Counts from official public data
Housing and community stats
Washington County, ID, American Community Survey 2020-2024
Median household income
$54,000
Poverty rate
15.3%
Median home value
$278,100
Prices +1.6% in a year
Median rent
$938/mo
Homeownership
74.6%
Bachelor's or higher
20.6%
Median age
45.0
Average commute
18.6 min
Largest reported origins and ancestries: Mexican Americans (1,735), German Americans (1,454), Irish Americans (1,408).
Economy and federal money
Jobs, income, federal spending and pandemic loans
Unemployment rate
4.3%
Sep 2026, +0.5 pts in a year
Average annual pay
$44,545
2,928 jobs, 2025
Income per person
$46,582
BEA, 2024
Federal spending
$83.7M
FY 2026, $7,970 per person
PPP loans
$8.6M
222 loans, 1,274 jobs reported
Campaign donations
$18.7K
Itemized, 2026 cycle
How people get to work
Washington County, ID, workers 16 and older. American Community Survey 5-year estimates
- Drove alone71.2%
- Carpooled11.9%
- Public transit0.0%
- Walked4.7%
- Bicycle3.0%
- Taxi, ride-hailing, motorcycle or other1.0%
- Worked from home8.3%
Average one-way commute: 18.6 minutes for people who do not work from home.
Environment and hazard risk
Washington County, ID, from FEMA, NOAA and EPA
Natural hazard risk
Very Low
Top: wildfire
Storm events since 1996
320
Most often heavy snow
Flood insurance policies
54
1.1% of homes, county
July high / Jan low
93° / 17°F
21.4 inches of rain a year
Hazards, floods and storm historyCheck a flood zone28 historic places
Health statistics
Share of adults in Washington County, ID, CDC PLACES estimates
Obesity
33.4%
U.S. 33.3% about the same
Diabetes
14.5%
U.S. 12.1% +2.4 pts
Smoking
15.2%
U.S. 12.8% +2.4 pts
Uninsured (18-64)
13.3%
U.S. 11.1% +2.2 pts
Cities, towns and ZIP codes in Washington County
Population shown
Frequently asked questions
- What is the largest city in Washington County, ID?
- Weiser is the largest city or town in Washington County, with about 5,935 residents.
- How many ZIP codes are in Washington County?
- Washington County includes 3 ZIP Code Tabulation Areas, including 83610, 83645, 83672.
- What is the population of Washington County, ID?
- About 11,142 people live in Washington County, based on American Community Survey 5-year estimates.
- What counties border Washington County?
- Washington County borders Malheur County, OR, Payette County, Gem County, Baker County, OR, Adams County.
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023