Whatcom County Flag

Whatcom County

State:
Washington
County Seat:
Bellingham

Whatcom County's estimated 2025 population is 234,561 with a growth rate of 0.57% in the past year according to the most recent United States census data. Whatcom County is the 9th largest county in Washington. The 2010 population was 201,549 and has seen a growth of 16.38% since that time.

234,561
Total Population
111
Population Density (mi²)
9
Population Rank (State)
1.3K 0.57%
Annual Population Growth

Whatcom County Population

Demographics

Economics and Income Statistics