West Virginia · FIPS 54055 · County seat: Princeton
Mercer County, WV GIS & Parcel Viewer
Here is the direct link to the county parcel map covering Mercer County, WV: Mercer County WV Parcel Viewer. Below you'll find basic facts about the county, steps for using the viewer, and nearby counties.
Open the Mercer County parcel map ↗
Opens agdonline.maps.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Mercer County WV Parcel Viewer |
|---|---|
| Type | County-run map |
| Website | agdonline.maps.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | Princeton |
| Population | 58,057 (2023 Census Bureau estimate) |
| Land area | 419 sq mi |
| FIPS code | 54055 |
About the official source
It is a county-level map: Mercer County or the company it hires keeps the parcel layer up to date. Our October 2026 check found the map open to the public, with no account or payment needed.
Finding a property on this map
- Click the button above and wait for the Web AppBuilder viewer to load. Some counties show a terms screen first.
- Search by street address, owner or parcel ID if the search box offers those options.
- Click a lot on the map to read its attributes.
- Turn on aerial imagery from the basemap tool and use the layer list to add things like zoning or flood zones when they're published.
If an address search comes up empty, try the parcel number from a tax bill or deed instead, or click the lot on the map.
The county in brief
The U.S. Census Bureau estimated Mercer County's population at 58,057 in 2023, spread over about 419 square miles of land, or roughly 139 people per square mile. By population it ranks 9th of 55 counties in West Virginia. Its county seat is Princeton.
Counties next to Mercer County
If the property sits near a county line, the parcel may belong to a neighbor. These counties border Mercer County:
- McDowell County
- Raleigh County
- Summers County
- Wyoming County
- Bland County, VA
- Giles County, VA
- Tazewell County, VA
Maps vs. surveys
The lines you see online are approximate. They're good for finding a lot and its parcel number, but a legal boundary question needs the recorded plat or a surveyor.