Guernsey County GIS Maps
Guernsey County, Ohio, has 38,438 residents and covers 522.3 square miles. The population declined 4.1% between the 2010 and 2020 census. More residents left than arrived over that decade. The FIPS code for Guernsey County is 39059.
Cambridge is the county's largest population center. Guernsey County also includes 13 zip codes, 6 public school districts and 38 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.
Guernsey County Trends
- Population
- 38,438▾
- Median Home Value
- $154,100▴
- K-12 Enrollment
- 8,425▾
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.
Guernsey 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.
Guernsey County Population
Guernsey County had 38,438 residents in 2020. That was 4.1% lower than in 2010. Guernsey County had 2,354 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 74 people per square mile. Some of the county's most populated postal areas include Cambridge, Byesville and Quaker City.
Population Trend in Guernsey County OH
Guernsey County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.
Guernsey County Zip Codes
Guernsey County has 13 zip codes. Some of the county's most populated zip codes include Cambridge (43725), Byesville (43723) and Quaker City (43773). Cambridge is the largest zip by population, with about 19,520 residents or 51% of the county total. Together, the three largest zips account for about 71% of all county residents based on 2020 population estimates.
Most Populated Zip Codes in Guernsey County OH
| ZIP | Area | Population | Trend |
|---|---|---|---|
| 43725 | Cambridge | 19,520 | ▾ -4.1% |
| 43723 | Byesville | 4,671 | ▾ -6.3% |
| 43773 | Quaker City | 2,964 | ▾ -8.7% |
| 43749 | Kimbolton | 2,308 | ▾ -1.3% |
| 43780 | Senecaville | 2,235 | ▴ 6.1% |
| Download all zip code data | |||
Guernsey County Zip Code populations and trends per most recent census data.
Guernsey County Demographics
Guernsey County has a median age of 42.7, which makes the county a little older than Ohio overall. About 22.2% of residents are under 18, while 19.9% 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 29.3% of the population, which points to a solid working-age base. About 15.3% 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 Guernsey County OH
Median Age
42.7
Under 18
22.2%
Age 65+
19.9%
Bachelor's+
15.3%
Guernsey County School Districts
Guernsey County is served by 6 public school districts with 8,425 students enrolled in 2024. The largest districts on the county map are East Muskingum Local, Cambridge City and Rolling Hills Local. Those three districts account for about 63% 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 Guernsey County OH
| District | Enrollment | Share | Trend |
|---|---|---|---|
| East Muskingum Local School District | 2,035 | 24.2% | ▴ 0.5% |
| Cambridge City School District | 1,797 | 21.3% | ▾ -0.4% |
| Rolling Hills Local School District | 1,456 | 17.3% | ▾ -0.9% |
| Ridgewood Local School District | 1,246 | 14.8% | — 0% |
| East Guernsey Local School District | 1,022 | 12.1% | ▾ -4% |
| Download all school district data | |||
Guernsey County school district enrollment and trends per most recent NCES reporting data.
Guernsey County Housing & Real Estate
Guernsey County has a median home value of $154,100 and a median gross rent of $803. About 72% 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 $192,800 and homes spent about 58 days on the market.
Guernsey County Housing Mix
Guernsey County housing mix: owner, renter and vacant units.
Guernsey County Housing Trends
Guernsey County median home value and rent trend (last 5 years).
Businesses in Guernsey County, OH
Guernsey County has 1,676 business listings across 434 categories. The largest categories in Guernsey County business listings are Churches & Religious Organizations (71, 4.2%), Auto Repair (41, 2.4%), and Gas Stations (32, 1.9%). The full Guernsey County business listings dataset includes names, categories, addresses and contact details where available. Guernsey County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.
Top Business Categories in Guernsey County, OH
| Category | Businesses | Share |
|---|---|---|
| Churches & Religious Organizations | 71 | 4.2% |
| Auto Repair | 41 | 2.4% |
| Gas Stations | 32 | 1.9% |
| Campgrounds & RV Parks | 28 | 1.7% |
| Hotels | 27 | 1.6% |
| Landmark And Historical Building | 26 | 1.6% |
| Convenience Stores | 24 | 1.4% |
| Community & Nonprofits | 21 | 1.3% |
| Medical Offices | 21 | 1.3% |
| Beauty Salons | 19 | 1.1% |
Guernsey County Business Listings
| Business | Category | City |
|---|---|---|
| Speedy Print | 3D Printing Service | Cambridge |
| Eagle HealthWorks | Abuse And Addiction Treatment | Byesville |
| The Robin's Nest | Accommodation | Cambridge |
| Perry and Associates | Accountant | Cambridge |
| Baker Activity Complex | Active Life | Lore City |
| Lion's Den | Adult Entertainment | Quaker City |
| Starr Advertising | Advertising Agency | Cambridge |
| M&M Feed and Supply Old Washington | Agricultural Service | Old Washington |
| Ridge Crest Farms | Agriculture | Cambridge |
| Cambridge Municipal Airport | Airport | Cambridge |
| Download Guernsey County business listings | ||
Guernsey County business listings sourced from Overture Maps. Includes locations with a high level of confidence.
Guernsey County Basemaps
Guernsey 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 Guernsey County Data Package
This page shows a preview of what's included in the Guernsey 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 Guernsey County. These nearby pages include the same mix of county maps, demographic summaries, school district context, housing trends and package links.