Gallia County's estimated 2026 population is 28,730 with a growth rate of -0.27% in the past year according to the most recent United States census data. Gallia County is the 74th largest county in Ohio. The 2010 population was 31,066 and has seen a growth of -7.52% since that time.
Data after 2023 is projected based on recent change
The racial composition of Gallia County includes 92.43% White, and smaller percentages for Black or African American, other race, Asian and multiracial populations.
White (92.43%)
Two or more races (3.03%)
Black or African American (2%)
Other race (1.72%)
Asian (0.83%)
Race | Population | Percentage (of total) |
|---|---|---|
| White | 26,953 | 92.43% |
| Two or more races | 883 | 3.03% |
| Black or African American | 582 | 2% |
| Other race | 503 | 1.72% |
| Asian | 241 | 0.83% |
Married
Widowed
Divorced
Separated
Never Married
Gallia County's average per capita income is $42,411. Household income levels show a median of $56,455. The poverty rate stands at 14.81%.
Name | Median | Mean |
|---|---|---|
| Married Families | $86,250 | - |
| Families | $69,918 | $91,268 |
| Households | $56,455 | $77,599 |
| Non Families | $30,487 | $46,706 |
Average Income
Median Household Income
Poverty Rate