Mercer County's 2026 population is estimated at 57,454, reflecting a -0.09% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Mercer County is the 9th largest county in West Virginia. The 2010 population was 62,335 and has grown -7.83% since 2010.
Overall: 43.5 years
Female: 45.2 years
Male: 41.8 years
There are 46,359 adults, (13,393 of whom are seniors) in Mercer County.
Female: 30,297 (51.7%)
Male: 28,266 (48.3%)
The racial composition of Mercer County includes 88.89% White, 4.05% Black or African American, and smaller percentages for other race, Native American, Asian and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 52,059 | 88.89% |
| Two or more races | 3,506 | 5.99% |
| Black or African American | 2,372 | 4.05% |
| Other race | 254 | 0.43% |
| Native American | 245 | 0.42% |
| Asian | 127 | 0.22% |
Mercer County 's average per capita income is $42,634. Household income levels show a median of $53,210. The poverty rate stands at 16.49%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $84,065 | - |
| Families | $71,953 | $84,904 |
| Households | $53,210 | $71,510 |
| Non Families | $32,365 | $45,947 |
Average Income
Median Household Income
Poverty Rate