Gallia County, OH Demographics
Gallia County, OH is the 73rd most populous of 88 counties in Ohio, with 29,220 residents across 467 square miles. That is about 63 people per square mile.
At the 2020 census
| Population | 29,220 |
|---|---|
| Land area | 467 sq mi |
| Density | 63 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Gallia County compares to the US
We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.
Central Location: Gallia County, OH
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Gallia County, OH — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Gallia County, OH
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 9535 | 4,498 | 77.2 | 58 |
| Census Tract 9537 | 4,137 | 122.9 | 34 |
| Census Tract 9539.01 | 4,084 | 34.1 | 120 |
| Census Tract 9536 | 4,000 | 89.3 | 45 |
| Census Tract 9538 | 3,953 | 102.9 | 38 |
| Census Tract 9540 | 3,509 | 7.4 | 472 |
| Census Tract 9539.02 | 2,632 | 19.2 | 137 |
| Census Tract 9541 | 2,407 | 13.5 | 179 |
Related places
Other counties nearby
Nearest counties
Metro areas containing Gallia County
About this page
This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.
Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.