How many people live in Mercer County, WV?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 57,500 people living in Mercer County, WV. That makes Mercer County the ninth-most populous county in West Virginia. It is home to 3.3% of people living in the state.
57.5K
population of Mercer County, WV (2024)
3.3%
County share of the West Virginia population (2024)
About 57,500 people lived in Mercer County, WV in 2024.
Population estimates, 2000–2024
What are Mercer County, WV’s age demographics?
About 13,500 Mercer County residents are aged 65 and older in 2024. That represents 23.5% of its population. For comparison, the age group represents 21.9% of West Virginia’s population and 18% in the US overall.
Another 12,100 Mercer County residents, or 21% of the population, were children under 18. For comparison, the age group represents 19.7% of West Virginia’s population and 21.6% in the US overall.
A higher share of Mercer County, WV's population is aged 65 or older than the US as a whole.
Population estimates by age group, (2024)
What are Mercer County, WV’s racial and ethnic demographics?
Non-Hispanic white residents make up 89.4% of the Mercer County, WV population, higher than the national share of 57.5%.
In contrast, Mercer County’s Hispanic population accounts for 1.4%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 6.1% of the county, compared with 12.6% nationally.
Racial and ethnic make up differ based on location. These figures reflect how people identified their race alone (not in combination with other races), and separate out Hispanic or Latino ethnicity, following Census reporting standards.
Mercer County, WV has a higher share of a non-Hispanic Black or African American population than West Virginia as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Mercer County, WV is Bluefield with about 9,200 residents in 2024.
Cities and towns in Mercer County, WV ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Bluefield | 9,157 |
| 2. | Princeton | 5,595 |
| 3. | Athens | 1,178 |
| 4. | Bramwell | 263 |
| 5. | Oakvale | 130 |
| 6. | Balance of Mercer County | 41,201 |
Keep exploring
Methodology
USAFacts standardizes data, in areas such as time and demographics, to make it easier to understand and compare.
The analysis was generated with the help of AI and reviewed by USAFacts for accuracy.
Page sources
USAFacts endeavors to share the most up-to-date information available. We sourced the data on this page directly from government agencies; however, the intervals at which agencies publish updated data vary.
