Mason County's 2026 population is estimated at 24,680, reflecting a -0.18% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Mason County is the 23rd largest county in West Virginia. The 2010 population was 27,377 and has grown -9.85% since 2010.
Data after 2023 is projected based on recent change
Overall: 44.2 years
Female: 45.7 years
Male: 42.6 years
There are 19,899 adults, (5,698 of whom are seniors) in Mason County.
Female: 12,866 (51.4%)
Male: 12,177 (48.6%)
The racial composition of Mason County includes 95.5% White, and smaller percentages for Two or more races, Black or African American, Asian, other race, Native American and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 23,915 | 95.5% |
| Two or more races | 712 | 2.84% |
| Black or African American | 253 | 1.01% |
| Asian | 93 | 0.37% |
| Other race | 65 | 0.26% |
| Native American | 5 | 0.02% |
Mason County 's average per capita income is $41,535. Household income levels show a median of $49,761. The poverty rate stands at 19.4%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $77,682 | - |
| Families | $69,510 | $86,019 |
| Households | $49,761 | $70,616 |
| Non Families | $30,220 | $35,629 |
Average Income
Median Household Income
Poverty Rate