Maryland · FIPS 24017 · County seat: La Plata
Charles County, MD GIS & Parcel Viewer
Looking for lot lines or a parcel number in Charles County, MD? The quickest route is Maryland FINDER Online (MD Dept. of Planning), the statewide parcel map we keep on file for this county. We link straight to it and add a few tips for getting around.
Open the Charles County statewide map ↗
Opens experience.arcgis.com in a new tab. We link out and never embed or copy parcel data.
Map and county facts
| Official map | Maryland FINDER Online (MD Dept. of Planning) |
|---|---|
| Type | Statewide map (covers all of Maryland) |
| Website | experience.arcgis.com |
| Access | Free, no login (checked Oct 2026) |
| County seat | La Plata |
| Population | 171,973 (2023 Census Bureau estimate) |
| Land area | 458 sq mi |
| FIPS code | 24017 |
Who runs this map
This is a statewide map, not a county site. Maryland FINDER Online (MD Dept. of Planning) covers parcels across Maryland, and Charles County is one part of it. A statewide layer can trail the county's own books by weeks or months, so treat it as a fast first look rather than the final word. Our October 2026 check found the map open to the public, with no account or payment needed.
How to use the Charles County viewer
- Open Maryland FINDER Online (MD Dept. of Planning) in a new tab and zoom to Charles County (around La Plata).
- Type a street address into the search box, or click directly on a parcel.
- Review the parcel attributes; field names vary by state.
- Confirm anything important with the county assessor, since the statewide layer is a compiled copy.
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
Charles County had an estimated 171,973 residents in 2023, according to the Census Bureau. With about 458 square miles of land, that works out to roughly 375 people per square mile. Among Maryland's 24 counties, it is the 10th largest by population. Another 185 square miles of water fall within its lines, according to Census mapping. La Plata serves as the county seat.
Counties next to Charles County
Parcels close to the edge of Charles County can fall in the next county over. Neighboring counties:
- Calvert County
- Prince George's County
- St. Mary's County
- Fairfax County, VA
- King George County, VA
- Prince William County, VA
- Stafford County, VA
- Westmoreland 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.