Gallia County GIS Maps
Gallia County, Ohio, has 29,220 residents and covers 466.5 square miles. The population declined 5.5% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Gallia County is 39053.
Gallipolis is the county's largest population center. Gallia County also includes 7 zip codes, 4 public school districts and 32 municipalities. Those boundaries help explain why population, schools, and housing can look different from one part of the county to another. The map below shows how those county lines, zip codes, and school districts fit together, and the sections that follow use that same geography to show population, demographics, school enrollment and housing patterns in more detail.
Maps, GIS layers and sample data. Paid packages add full layers, analytics and database files.
Gallia County Trends
- Population
- 29,220▾
- Median Home Value
- $135,000▴
- K-12 Enrollment
- 6,001▾
County analytics dashboards with historical trends & projections included in package downloads.
Free starter access previews county maps, lightweight GIS, and sample data. Paid packages unlock full GIS layers, analytics, and database files.
Gallia County Maps
The maps below show a few of the county map styles included in our downloads. County packages include map exports in JPEG, PNG, SVG, PDF and GeoTIFF formats plus more than 20 GIS layers for mapping, research and analysis. Available layers include zip codes, area codes, subdivisions, school districts, political boundaries, roads, water features, points of interest and more.
County packages also include historical county demographics, business intelligence, analytical dashboards, AI-ready prompts, markdown files and related reference data. Everything is organized to save hours of manual work collecting current data, cleaning it and joining it together. That makes it easier to move faster on analytics, due diligence, business planning and location research. Paid packages are built for commercial use, but some package contents include source-specific attribution or notice guidance. Review Licensing & Data Source Notices.
Gallia County Population
Gallia County had 29,220 residents in 2020. That was 5.5% lower than in 2010. Gallia County had 1,849 fewer people in 2020 than it did in 2000, which points to a long-term population decline. The county is fairly spread out, with about 63 people per square mile. Some of the county's most populated postal areas include Gallipolis, Bidwell and Vinton.
Population Trend in Gallia County OH
Gallia County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Gallia County Zip Codes
Gallia County has 7 zip codes. Some of the county's most populated zip codes include Gallipolis (45631), Bidwell (45614) and Vinton (45686). Gallipolis is the largest zip by population, with about 14,200 residents or 49% of the county total. Together, the three largest zips account for about 77% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Gallia County OH
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 45631 | Gallipolis | 14,200 | ▾ -5.6% |
| 45614 | Bidwell | 4,800 | ▾ -5.5% |
| 45686 | Vinton | 3,379 | ▾ -0.5% |
| 45623 | Crown City | 3,235 | ▾ -7.4% |
| 45658 | Patriot | 2,538 | ▾ -8.9% |
| Download all zip code data | |||
Gallia County Zip Code populations and trends per most recent census data.
Gallia County Demographics
Gallia County has a median age of 41.3, which makes the county a little older than Ohio overall. About 23.6% of residents are under 18, while 19.4% are 65 or older. That gives the county a fairly even mix of younger families and older adults. The largest age group is 25 to 44 at about 28.7% of the population, which points to a solid working-age base. About 17.9% of adults have a bachelor's degree or higher, above the statewide figure of 30.9%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.
Key Demographics for Gallia County OH
Median Age
41.3
Under 18
23.6%
Age 65+
19.4%
Bachelor's+
17.9%
Gallia County School Districts
Gallia County is served by 4 public school districts with 6,001 students enrolled in 2024. The largest districts on the county map are Gallia County Local, Gallipolis City and Fairland Local. Those three districts account for about 88% of public school enrollment in the map area. Total enrollment has stayed fairly steady in recent years, but it is slightly lower than it was in 2017.
Largest School Districts by Enrollment in Gallia County OH
| District | Enrollment | Share | Trend |
|---|---|---|---|
| Gallia County Local School District | 2,103 | 35% | ▾ -2.7% |
| Gallipolis City School District | 1,859 | 31% | ▾ -3% |
| Fairland Local School District | 1,298 | 21.6% | ▾ -5.7% |
| Symmes Valley Local School District | 741 | 12.3% | ▾ -1.7% |
| Download all school district data | |||
Gallia County school district enrollment and trends per most recent NCES reporting data.
Gallia County Housing & Real Estate
Gallia County has a median home value of $135,000 and a median gross rent of $798. About 76% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run below the Ohio median, while rents come in below the state average. In March 2026, the median listing price was $297,450 and homes spent about 43 days on the market.
Gallia County Housing Mix
Gallia County housing mix: owner, renter and vacant units.
Gallia County Housing Trends
Gallia County median home value and rent trend (last 5 years).
Businesses in Gallia County, OH
Gallia County has 1,168 business listings across 350 categories. The largest categories in Gallia County business listings are Churches & Religious Organizations (62, 5.3%), Gas Stations (26, 2.2%), and Auto Repair (19, 1.6%). The full Gallia County business listings dataset includes names, categories, addresses and contact details where available. Gallia County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Gallia County, OH
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 62 | 5.3% |
| Gas Stations | 26 | 2.2% |
| Auto Repair | 19 | 1.6% |
| Insurance Agencies | 17 | 1.5% |
| Money Transfer Services | 16 | 1.4% |
| Community & Nonprofits | 16 | 1.4% |
| Contractors | 14 | 1.2% |
| Baptist Church | 14 | 1.2% |
| Convenience Stores | 14 | 1.2% |
| Farm | 13 | 1.1% |
Gallia County Business Listings
| Business | Category | City |
|---|---|---|
| TASC of Southeast Ohio | Abuse And Addiction Treatment | Gallipolis |
| Lafayette Square | Accommodation | Gallipolis |
| Shaynaco LLC | Accountant | Gallipolis |
| Stanley L Evans Athletic and Recreation Field | Active Life | Bidwell |
| Jividen's Farm Equipment | Agricultural Service | Gallipolis |
| Gallia-Meigs Regional Airport | Airport | Gallipolis |
| Gallia County EMS Station 9 | Ambulance And Ems Services | Gallipolis |
| McClure's Restaurant | American Restaurants | Gallipolis |
| Klicher Kennels | Animal Shelters | Gallipolis |
| The Home Place Mercantile | Antique Store | Gallipolis |
| Download Gallia County business listings | ||
Gallia County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Gallia County Basemaps
Gallia County map and data packages include a set of useful basemaps to help you get started quickly. These include a custom light grey canvas, USGS topo, imagery and other reference layers that make it easier to build clear, meaningful county maps using the included GIS layers, your own data or both. Pre-rendered map tiles for the light grey basemap are included so you can use them offline or host them on your own CDN.
Get the Full Gallia County Data Package
This page shows a preview of what's included in the Gallia County data package. The full package gives you a ready-to-use county data system with GIS layers, historical data, maps, database files and planning tools that save hours of manual data gathering, cleanup and joins. Everything is organized to help you skip data wrangling and start analysis faster.
- 20+ GIS layers for zip codes, school districts, roads, water, boundaries and more
- Historical county demographics, housing, income and trend data
- ZIP code population files and school district enrollment history
- Database files, markdowns, AI-ready prompts and documentation
- Map exports in PNG, JPEG, PDF, SVG and GeoTIFF formats
- Offline-ready data explorer, map and analytics tools
Paid packages support commercial use, client work, and derived outputs. Some package contents may include source-specific attribution or provider notices. See Licensing & Data Source Notices.
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Nearby Counties
Browse county data pages for the counties that border Gallia County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.