Clark County's 2026 population is estimated at 537,997, reflecting a 1.1% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Clark County is the 5th largest county in Washington. The 2010 population was 426,733 and has grown 26.07% since 2010.
Overall: 39.1 years
Female: 40 years
Male: 38.2 years
There are 399,487 adults, (86,076 of whom are seniors) in Clark County.
Female: 260,395 (50.4%)
Male: 256,564 (49.6%)
The racial composition of Clark County includes 75.2% White, 5.05% Asian, 4.33% other race, and smaller percentages for Black or African American, Native Hawaiian or Pacific Islander, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 388,754 | 75.2% |
| Two or more races | 60,137 | 11.63% |
| Asian | 26,084 | 5.05% |
| Other race | 22,405 | 4.33% |
| Black or African American | 11,253 | 2.18% |
| Native Hawaiian or Pacific Islander | 4,383 | 0.85% |
| Native American | 3,943 | 0.76% |
Clark County 's average per capita income is $60,255. Household income levels show a median of $97,536. The poverty rate stands at 7.98%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $127,038 | $160,114 |
| Families | $112,737 | $142,981 |
| Households | $97,536 | $125,385 |
| Non Families | $61,594 | $82,050 |
Average Income
Median Household Income
Poverty Rate