Clark County Flag

Clark County

State:
Washington
County Seat:
Vancouver

Clark County's estimated 2026 population is 536,873 with a growth rate of 0.9% in the past year according to the most recent United States census data. Clark County is the 5th largest county in Washington. The 2010 population was 426,733 and has seen a growth of 25.81% since that time.

536,873
Total Population
855
Population Density (mi²)
5
Population Rank (State)
4.8K 0.9%
Annual Population Growth

Clark County Population

Demographics

Economics and Income Statistics