Whatcom County's 2026 population is estimated at 238,183, reflecting a 0.76% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Whatcom County is the 9th largest county in Washington. The 2010 population was 201,549 and has grown 18.18% since 2010.
Overall: 38.4 years
Female: 39 years
Male: 37.8 years
There are 187,760 adults, (43,568 of whom are seniors) in Whatcom County.
Female: 116,264 (50.4%)
Male: 114,239 (49.6%)
The racial composition of Whatcom County includes 78.03% White, 4.52% other race, 4.37% Asian, and smaller percentages for Native American, Black or African American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 179,852 | 78.03% |
| Two or more races | 23,243 | 10.08% |
| Other race | 10,418 | 4.52% |
| Asian | 10,078 | 4.37% |
| Native American | 4,102 | 1.78% |
| Black or African American | 2,213 | 0.96% |
| Native Hawaiian or Pacific Islander | 597 | 0.26% |
Whatcom County 's average per capita income is $54,738. Household income levels show a median of $81,784. The poverty rate stands at 12.88%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $120,900 | $149,518 |
| Families | $106,922 | $133,698 |
| Households | $81,784 | $109,592 |
| Non Families | $49,821 | $70,035 |
Average Income
Median Household Income
Poverty Rate