Wahkiakum County, Washington Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 37th-largest in Washington
The population of Wahkiakum County, Washington is 4,573 as of the 2023 American Community Survey, making it the 37th-largest county in Washington. The median household income is $57,091, the median home value is $344,500, and the median age is 54.8.
The population of Wahkiakum County has grown 20.5% since 2010 (3,983 → 4,800), a +1.34% annualized rate.
4,573
Population
+1.34%
Annual growth
17
People / sq mi
$57,091
Median Income
$344,500
Median Home Value
Wahkiakum County covers 263 sq mi of land at 17.4 people per square mile.
About Wahkiakum County, WA
Wahkiakum County skews on age — the median resident is 54.8, older than the national median. With 4,573 residents, Wahkiakum County is a county in Washington. It ranks #37 among counties in Washington by population.
Median household income is $57,091, below the US median of $78,538. Roughly 13.2% of residents fall below the poverty line, above the national 12.4%. A typical home is worth $344,500, with typical rent around $1,086.
Degree attainment is mid-range for US counties: 22.3% of adults hold a four-year degree, below the national 35.0%. About 11.7% of workers primarily work from home, below the national 14.0%, and the average commute runs about 42 minutes each way.
The age structure shapes everything downstream in Wahkiakum County — from housing demand to the mix of working-age earners reflected in the income figures above.
Wahkiakum County Population History (2010-2024)
The county of Wahkiakum County had a population of 3,983 in 2010 and 4,800 in 2024, a 20.5% growth over 14 years. The peak was 4,800 in 2024. Average annual growth rate: 1.35%.
4,800
Population (2024)
3,983
Population (2010)
4,800
Peak (2024)
1.35%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 3,983 |
| 2011 | 3,992 |
| 2012 | 3,996 |
| 2013 | 4,002 |
| 2014 | 4,008 |
| 2015 | 3,989 |
| 2016 | 4,123 |
| 2017 | 4,207 |
| 2018 | 4,343 |
| 2019 | 4,420 |
| 2020 | 4,448 |
| 2021 | 4,586 |
| 2022 | 4,691 |
| 2023 | 4,767 |
| 2024 | 4,800 |
Race & Ethnicity
| White | 86.1% |
| Black or African American | 1.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 4.7% |
| Two or More Races | 0.1% |
Age & Sex
54.8
Median Age
49.4%
Female
50.6%
Male
32.3%
Age 65+
Age Distribution
Children (under 15): 15.2% · Seniors (65+): 32.3%
Income & Poverty
| Median household income | $57,091$-37,861 vs state |
| Mean household income | $75,908 |
| Per-capita income | $32,879 |
| Poverty rate | 13.2%+6.8% vs state |
| Unemployment rate | 1.1% |
| Employment-to-population | 40.8% |
Top Industries by Employment
The largest employment sector in Wahkiakum County is professional & business services, accounting for 19.0% of workers.
How residents commute
0.7%
Drive alone
5.2%
Carpool
67.2%
Public transit
11.7%
Work from home
42.3 min
Avg commute
Housing
$344,500$-175,300 vs state
Median home value
$1,086
Median rent
84.8%
Homeownership rate
2,207
Total housing units
91.8%
Occupied
8.2%
Vacant
15.2%
Renter-occupied
Social & access
95.2%
With health insurance
96.5%
With broadband internet
55.2%
Foreign-born
15.8%
Veterans (18+)
19.0%
With a disability
95.0%
Speak language other than English at home
Education
92.8%
High School+
22.3%
Bachelor's+
Largest cities in Washington
Other counties in Washington
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County rankings
Frequently Asked Questions
Wahkiakum County, Washington has a population of 4,573 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 37th-largest county in Washington. Population density is 17 people per square mile.
The population of Wahkiakum County has grown 20.5% since 2010 (3,983 → 4,800), a +1.34% annualized rate.
The median household income in Wahkiakum County, Washington is $57,091, with mean (average) household income of $75,908 and per-capita income of $32,879. 13.2% of residents live below the federal poverty level.
In Wahkiakum County, the largest racial and ethnic groups are White (86.1%), Hispanic or Latino (4.7%), Black or African American (1.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Wahkiakum County, Washington is 54.8 years. Residents are 49.4% female and 50.6% male.
The median home value in Wahkiakum County is $344,500 and median monthly rent is $1,086. 84.8% of occupied housing units are owner-occupied. The county has 2,207 total housing units, 8.2% of which are vacant.
The largest employment sector in Wahkiakum County, Washington is professional, scientific, and management services, employing 19.0% of workers. The unemployment rate is 1.1%.
Seattle is among the largest cities associated with Wahkiakum County, Washington, with a population of 741,440.
Wahkiakum County, WA Climate
Wahkiakum County, WA has an average annual temperature of 10.3°C (51°F) and receives about 2261 mm of precipitation per year. The warmest month is August and the coldest is January. Figures are 1970–2000 climate normals.
10.3°C
Avg Temp
2261
Precip (mm/yr)
Aug
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | 5° / 40° | 341 mm |
| February | 6° / 43° | 268 mm |
| March | 7° / 45° | 238 mm |
| April | 9° / 48° | 158 mm |
| May | 12° / 53° | 105 mm |
| June | 14° / 57° | 76 mm |
| July | 16° / 61° | 39 mm |
| August | 17° / 62° | 52 mm |
| September | 15° / 59° | 101 mm |
| October | 11° / 52° | 193 mm |
| November | 7° / 45° | 334 mm |
| December | 5° / 41° | 356 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Wahkiakum County, WA
The most comfortable months to visit Wahkiakum County, WA are typically July, August and June, when temperatures are mildest and rainfall is relatively low. The hottest month is August (around 23°C high). The coldest is January (near 1°C low). December is usually the wettest month.
Where to stay near Wahkiakum County
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.