Marion County's 2026 population is estimated at 55,337, reflecting a -0.28% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Marion County is the 11th largest county in West Virginia. The 2010 population was 56,566 and has grown -2.17% since 2010.
Data after 2023 is projected based on recent change
Overall: 40.3 years
Female: 41.5 years
Male: 39.2 years
There are 44,804 adults, (11,236 of whom are seniors) in Marion County.
Female: 27,916 (49.9%)
Male: 27,993 (50.1%)
The racial composition of Marion County includes 91.57% 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 | 51,194 | 91.57% |
| Two or more races | 2,711 | 4.85% |
| Black or African American | 1,428 | 2.55% |
| Asian | 323 | 0.58% |
| Other race | 240 | 0.43% |
| Native American | 12 | 0.02% |
| Native Hawaiian or Pacific Islander | 1 | 0% |
Marion County 's average per capita income is $47,361. Household income levels show a median of $67,370. The poverty rate stands at 13.56%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $96,850 | $107,605 |
| Families | $85,051 | $95,376 |
| Households | $67,370 | $82,263 |
| Non Families | $43,487 | $55,923 |
Average Income
Median Household Income
Poverty Rate