Greenbrier County's 2026 population is estimated at 31,307, reflecting a -0.86% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Greenbrier County is the 16th largest county in West Virginia. The 2010 population was 35,554 and has grown -11.95% since 2010.
Data after 2023 is projected based on recent change
Overall: 46.8 years
Female: 47.7 years
Male: 45.1 years
There are 26,141 adults, (7,926 of whom are seniors) in Greenbrier County.
Female: 16,569 (51.2%)
Male: 15,817 (48.8%)
The racial composition of Greenbrier County includes 92.48% White, and smaller percentages for Black or African American, Asian, other race, Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 29,951 | 92.48% |
| Two or more races | 1,234 | 3.81% |
| Black or African American | 758 | 2.34% |
| Asian | 214 | 0.66% |
| Other race | 174 | 0.54% |
| Native American | 44 | 0.14% |
| Native Hawaiian or Pacific Islander | 11 | 0.03% |
Greenbrier County 's average per capita income is $39,917. Household income levels show a median of $48,218. The poverty rate stands at 21.82%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $77,317 | - |
| Families | $66,967 | $84,978 |
| Households | $48,218 | $69,064 |
| Non Families | $33,715 | $45,231 |
Average Income
Median Household Income
Poverty Rate