Gallia County, Ohio
Located in Ohio, Gallia County has a population of 29,068 residents and a median age of 41.4 years, making it the #1,503 most populous county out of 3,222 nationwide. In terms of economic indicators, the county has a poverty rate of 16.4%. The median home value is $155,600, and the median household income is $56,830, which is 24% below the national median.
Demographics
Gallia County has a population of 29,068, making it the #1,503 most populous county in the US. The median age is 41.4 years, which is 6.4% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Geographic Mobility (Past Year)
Economy
The median household income in Gallia County is $56,830, ranking #2,346 out of 3,222 counties — 24.4% below the national median. The poverty rate is 16.4% and unemployment stands at 3.5%.
Median Household Income Trend
Rankings →Income Distribution
Industry of Employment
Occupation
Housing
The median home value in Gallia County is $155,600 (-44.8% vs national). Renters pay a median of $813/mo and the homeownership rate is 74.7%.
Median Home Value Trend
Rankings →Household Type
Education
In Gallia County, 20.5% of adults age 25+ hold a bachelor's degree or higher, which is 39.2% below the national average, ranking #1,916 out of 3,222 counties.
Bachelor's Degree or Higher Trend
Rankings →Health & Wellbeing
Life expectancy in Gallia County is 71.7 years. 20.5% of adults report poor or fair health and 8.3% lack health insurance. Data from County Health Rankings (2025).
Life Expectancy Trend
Substance Use
21.9% of adults in Gallia County smoke , 40.1% are obese , and 18.1% report excessive drinking. The drug overdose death rate is 78.4 per 100,000.
Adult Smoking Trend
Safety
The homicide rate in Gallia County is 6.7 per 100,000 and the suicide rate is 26.8 per 100,000. Motor vehicle deaths occur at a rate of 18.8 per 100,000.
Homicide Rate Trend
Families & Children
23.7% of children in Gallia County live in poverty and the infant mortality rate is 9.0 per 1,000 live births. The teen birth rate is 28.8 per 1,000 females age 15–19.
Infant Mortality Trend
Civic & Transportation
Voter turnout in Gallia County is 60.1%. The mean commute time is 27.6 min, which is 0.1% above the national average.
Voter Turnout Trend
Mean Commute Time Trend
Rankings →Elections
In the 2024 presidential election, Gallia County voted Republican with a margin of 59.4%. The vote was 19.9% Dem / 79.3% Rep. Compared to 2020, the margin shifted 4.0 toward Republicans .
Vote Share Over Time
About Gallia County, Ohio
Gallia County, Ohio has a total population of 29,068, making it the 1,503rd most populous county in the United States. The median age in Gallia County is 41.4 years, which is 6.4% above the national median of 38.9 years.
The median household income in Gallia County is $56,830, which ranks #2,346 of 3,222 counties nationwide. This is 24.4% below the national median of $75,149. The poverty rate is 16.4%, higher than the national rate of 12.6%. The unemployment rate stands at 3.5%.
The median home value in Gallia County is $155,600, 44.8% below the national median. Renters in Gallia County pay a median gross rent of $813 per month. The homeownership rate is 74.7%, compared to the national rate of 64.4%.
In Gallia County, 20.5% of residents aged 25 and older hold a bachelor's degree or higher, 39.2% below the national average of 33.7%. Health insurance coverage stands at 91.3% of the population. The average commute time for workers is 27.6 min.
Gallia County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 92.6% of the population, followed by Two or More Races (2.5%) and Black (non-Hispanic) (2.0%).
All data for Gallia County, Ohio comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.