Marion County GIS Maps

Marion 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.

Marion County Parcels

Marion County has 39,456 mapped parcels covering 194,613 acres. The median lot size is 0.33 acres. 4,041 parcels are 10 acres or larger. The records carry 26,066 distinct owner names. Owner names, mailing addresses, site addresses and lot sizes are on nearly every parcel. Browse the interactive Marion County Parcel viewer here.

Marion County Parcel Data Coverage

Field coverage measured across all Marion County parcel records. Download free sample data here.

Marion County Population

Marion County had 56,205 residents in 2020. That was 0.4% lower than in 2010. Marion County had 393 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 182 people per square mile. Some of the county's most populated postal areas include Fairmont, Mannington and Rivesville.

Population Trend in Marion County WV

Marion County Population per 2000, 2010 and 2020 census counts with a baseline 2030 projection.

Marion County Zip Codes

Marion County has 14 zip codes. Some of the county's most populated zip codes include Fairmont (26554), Mannington (26582) and Rivesville (26588). Fairmont is the largest zip by population, with about 42,133 residents or 75% of the county total. Together, the three largest zips account for about 88% of all county residents based on 2020 population estimates.

Most Populated Zip Codes in Marion County WV

Marion County Zip Code populations and trends per most recent census data.

Marion County Demographics

Marion County has a median age of 40.4, which makes the county a little younger than West Virginia overall. About 20% of residents are under 18, while 19.8% 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 30.2% of the population, which points to a solid working-age base. About 25.8% of adults have a bachelor's degree or higher, above the statewide figure of 23.3%. The county is mostly White by population, though Hispanic, Asian, Black and multiracial residents are also part of the local mix.

Key Demographics for Marion County WV

Marion County School Districts

Marion County is served by 1 public school district with 7,112 students enrolled in 2024. Several larger districts account for a substantial share of students across the county map area. Those three districts account for about 100% 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 Marion County WV

Marion County school district enrollment and trends per most recent NCES reporting data.

Marion County Housing & Real Estate

Marion County has a median home value of $164,300 and a median gross rent of $901. About 76% of occupied homes in the county are owner-occupied, so the local housing market leans heavily toward ownership. Home values run above the West Virginia median, while rents come in above the state average. In March 2026, the median listing price was $158,625 and homes spent about 50 days on the market.

Businesses in Marion County, WV

Marion County has 2,131 business listings across 457 categories. The largest categories in Marion County business listings are Churches & Religious Organizations (108, 5.1%), Gas Stations (50, 2.3%), and ATMs (42, 2.0%). The full Marion County business listings dataset includes names, categories, addresses and contact details where available. Marion County packages also include U.S. Census County Business Patterns data with establishment counts, employment and payroll by industry sector.

Top Business Categories in Marion County, WV

Marion County Business Listings

Marion County business listings sourced from Overture Maps. Includes locations with a high level of confidence.

Marion County Basemaps

Marion 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.

Preview a Live Package Demo

See exactly what is included in a county data package. Inspect how files are organized, the interactive data explorer and how maps and analytics are laid out. The demo loads a real sample package from West Virginia — explore the full structure before you buy.