Clark County, Washington Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 5th-largest in Washington
The population of Clark County, Washington is 510,516 as of the 2023 American Community Survey, making it the 5th-largest county in Washington. The median household income is $94,948, the median home value is $487,900, and the median age is 38.9.
The population of Clark County has grown 23.6% since 2010 (426,733 → 527,269), a +1.52% annualized rate.
510,516
Population
+1.52%
Annual growth
812
People / sq mi
$94,948
Median Income
$487,900
Median Home Value
Clark County covers 629 sq mi of land at 812.3 people per square mile.
About Clark County, WA
Clark County is a county in Washington with a population of 510,516. It ranks #5 among counties in Washington by population. The median age is 38.9, in line with the national median. The population is 49.7% male and 50.3% female.
The median household income in Clark County is $94,948, above the US median of $74,580. 5.8% of residents live below the federal poverty level. Home values sit at a median of $487,900, with monthly rent averaging $1,668. The homeownership rate of 66.2% is close to the national rate of 64.8%.
Educational attainment in Clark County reflects 33.0% of adults 25 and older holding a bachelor's degree or higher, near the national average of 34.3%. Roughly 17.3% of workers primarily work from home, noticeably above the national work-from-home rate of 14.2%. The average commute is 25.2 minutes each way.
Clark County Population History (2010-2024)
The county of Clark County had a population of 426,733 in 2010 and 527,269 in 2024, a 23.6% growth over 14 years. The peak was 527,269 in 2024. Average annual growth rate: 1.52%.
527,269
Population (2024)
426,733
Population (2010)
527,269
Peak (2024)
1.52%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 426,733 |
| 2011 | 432,388 |
| 2012 | 436,532 |
| 2013 | 441,591 |
| 2014 | 448,505 |
| 2015 | 457,320 |
| 2016 | 465,911 |
| 2017 | 475,238 |
| 2018 | 482,467 |
| 2019 | 489,271 |
| 2020 | 505,363 |
| 2021 | 512,662 |
| 2022 | 517,036 |
| 2023 | 522,467 |
| 2024 | 527,269 |
Race & Ethnicity
| White | 77.3% |
| Black or African American | 2.1% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 2.5% |
| Two or More Races | 0.1% |
Age & Sex
38.9
Median Age
50.3%
Female
49.7%
Male
16.2%
Age 65+
Age Distribution
Children (under 15): 18.9% · Seniors (65+): 16.2%
Income & Poverty
| Median household income | $94,948$-4 vs state |
| Mean household income | $120,560 |
| Per-capita income | $46,391 |
| Poverty rate | 5.8%-0.6% vs state |
| Unemployment rate | 3.3% |
| Employment-to-population | 60.7% |
Top Industries by Employment
The largest employment sector in Clark County is professional & business services, accounting for 20.9% of workers.
How residents commute
1.2%
Drive alone
1.6%
Carpool
70.4%
Public transit
17.3%
Work from home
25.2 min
Avg commute
Housing
$487,900$-31,900 vs state
Median home value
$1,668
Median rent
66.2%
Homeownership rate
201,114
Total housing units
96.2%
Occupied
3.8%
Vacant
33.8%
Renter-occupied
Social & access
93.2%
With health insurance
97.2%
With broadband internet
53.0%
Foreign-born
8.3%
Veterans (18+)
13.0%
With a disability
83.6%
Speak language other than English at home
Education
92.8%
High School+
33.0%
Bachelor's+
Largest cities in Washington
Other counties in Washington
Part of Washington
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County rankings
Common questions about Clark County, WA
Frequently Asked Questions
Clark County, Washington has a population of 510,516 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 5th-largest county in Washington. Population density is 812 people per square mile.
The population of Clark County has grown 23.6% since 2010 (426,733 → 527,269), a +1.52% annualized rate.
The median household income in Clark County, Washington is $94,948, with mean (average) household income of $120,560 and per-capita income of $46,391. 5.8% of residents live below the federal poverty level.
In Clark County, the largest racial and ethnic groups are White (77.3%), Hispanic or Latino (2.5%), Black or African American (2.1%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Clark County, Washington is 38.9 years. Residents are 50.3% female and 49.7% male.
The median home value in Clark County is $487,900 and median monthly rent is $1,668. 66.2% of occupied housing units are owner-occupied. The county has 201,114 total housing units, 3.8% of which are vacant.
The largest employment sector in Clark County, Washington is professional, scientific, and management services, employing 20.9% of workers. The unemployment rate is 3.3%.
Seattle is among the largest cities associated with Clark County, Washington, with a population of 741,440.
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Statewide data for Washington
Population, race, income, age, and trends across Washington
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.