Mason County's estimated 2026 population is 71,388 with a growth rate of 1.25% in the past year according to the most recent United States census data. Mason County is the 20th largest county in Washington. The 2010 population was 60,733 and has seen a growth of 17.54% since that time.
Data after 2023 is projected based on recent change
The racial composition of Mason County includes 78.32% White, 6.97% other race, and smaller percentages for Native American, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.
White (78.32%)
Two or more races (10.43%)
Other race (6.97%)
Native American (1.95%)
Black or African American (1.03%)
Asian (1.02%)
Native Hawaiian or Pacific Islander (0.28%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 52,450 | 78.32% |
| Two or more races | 6,984 | 10.43% |
| Other race | 4,668 | 6.97% |
| Native American | 1,309 | 1.95% |
| Black or African American | 689 | 1.03% |
| Asian | 682 | 1.02% |
| Native Hawaiian or Pacific Islander | 186 | 0.28% |
Married
Widowed
Divorced
Separated
Never Married
Mason County's average per capita income is $51,467. Household income levels show a median of $78,359. The poverty rate stands at 12.61%.
Name | Median | Mean |
|---|---|---|
| Married Families | $104,503 | $121,274 |
| Families | $91,478 | $109,864 |
| Households | $78,359 | $97,813 |
| Non Families | $46,196 | $64,965 |
Average Income
Median Household Income
Poverty Rate