How many people live in Monongalia County, WV?
Updated Apr. 6, 2026Refreshed annually
In 2024, there were about 108,700 people living in Monongalia County, WV. That makes Monongalia County the third-most populous county in West Virginia. It is home to 6.2% of people living in the state.
109K
population of Monongalia County, WV (2024)
6.2%
County share of the West Virginia population (2024)
About 108,700 people lived in Monongalia County, WV in 2024.
Population estimates, 2000–2024
What are Monongalia County, WV’s age demographics?
About 15,600 Monongalia County residents are aged 65 and older in 2024. That represents 14.3% of its population. For comparison, the age group represents 21.9% of West Virginia’s population and 18% in the US overall.
Another 17,200 Monongalia County residents, or 15.9% 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 Monongalia County, WV's population is aged 18–24 than the US as a whole.
Population estimates by age group, (2024)
What are Monongalia County, WV’s racial and ethnic demographics?
Non-Hispanic white residents make up 86.5% of the Monongalia County, WV population, higher than the national share of 57.5%.
In contrast, Monongalia County’s Hispanic population accounts for 3.3%, below the 20% nationwide, and the non-Hispanic Black or African American population makes up 3.7% 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.
Monongalia County, WV has a higher share of a non-Hispanic Asian population than West Virginia as a whole.
Population estimates by race and ethnicity, (2024)
The largest city or town in Monongalia County, WV is Morgantown with about 30,500 residents in 2024.
Cities and towns in Monongalia County, WV ranked by population
Population (2024), includes only portions within county
| City or town | Population | |
|---|---|---|
| 1. | Morgantown | 30,490 |
| 2. | Westover | 4,088 |
| 3. | Star City | 1,803 |
| 4. | Granville | 1,378 |
| 5. | Blacksville | 119 |
| 6. | Balance of Monongalia County | 70,819 |
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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.
