| Name | Mercer County |
| State | West Virginia |
| FIPS Code | 54055 |
| County Seat | Princeton |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2024) | 58,008 |
| Population Growth Rate(2020-2024) | -2.84% |
| Majority Ethnicity | White 93.46% |
| Public School Majority Ethnicity | White 82% |
| Partisan Voting Index | Strongly Republican:+29 |
| Unemployment Rate (May 2026) | 5.5% |
| Sales Tax Rate (2025) | 6% |
| Area Code(s) | 304 / 681 |
| Race/Ethnicity | Percentage of Population (2023) |
|---|---|
| White | 93.46% |
| African American | 4.5% |
| Hispanic | 1.37% |
| Asian | 0.31% |
| Native American | 0.36% |
| Hawaiin/Pacific Islander | 0% |
| Race/Ethnicity | Percentage of Public School Students (2023) |
|---|---|
| White | 82.21% |
| African American | 8.95% |
| Hispanic | 1.09% |
| Asian | 0.31% |
| Native American | 0.05% |
| Hawaiin/Pacific Islander | 0.01% |