County GIS · Parcel viewers · October 18, 2026
Maryland County GIS Websites: Parcel Viewers by County
Which parcel map software each Maryland county uses (24 of 24 verified), how to search the common viewers, and a link to every official map.
Looking for Maryland county GIS websites? Maryland has 23 counties and 1 independent city, and their official parcel maps do not all run on the same software. Knowing which viewer a county uses tells you what the search box expects and where the parcel report is.
If you look up land in more than one Maryland county, you will notice the parcel maps don't match. That is because each office chooses its own software. Below, all 24 Maryland entries in our directory are listed with the viewer each one uses, plus tips for the most common types.
Maryland at a glance
- Entries in the directory: 24
- With a verified public parcel viewer: 24
- ArcGIS Experience Builder: 22
- county web map: 2
21 of these entries point to a statewide viewer rather than a county-run site (Maryland FINDER Online (MD Dept. of Planning)). A statewide map is handy for crossing county lines, but the local office is still where deeds and tax records are kept.
The most populous counties
Most lookups happen in the largest places, so here is what their maps run on.
| Name | 2023 population | Viewer |
|---|---|---|
| Montgomery County | 1,058,474 | ArcGIS Experience Builder |
| Prince George's County | 947,430 | county web map |
| Baltimore County | 844,703 | county web map |
| Anne Arundel County | 594,582 | ArcGIS Experience Builder |
| Baltimore City | 565,239 | ArcGIS Experience Builder |
How to search the most common viewers in Maryland
ArcGIS Experience Builder (22 entries, e.g. Allegany County, Anne Arundel County, Baltimore City)
- Open the official map link from the county's page; an ArcGIS Experience Builder app opens in a new tab. Accept any splash or disclaimer screen.
- Search by address or parcel ID, or pan to the area.
- Select a parcel to view the information the publisher makes available.
- Explore the app's panels for layers, legends or printing.
county web map (2 entries, e.g. Baltimore County, Prince George's County)
- Open the official map link from the county's page; it opens in a new tab.
- Accept any disclaimer, then look for a search box that takes street addresses, owners or parcel IDs.
- Zoom in and click a parcel to see its details.
- Use the map's layer controls to add aerials or other layers if they're offered.
Every Maryland entry and its viewer
| Name | Seat | 2023 population | Official viewer type |
|---|---|---|---|
| Allegany County | Cumberland | 67,273 | ArcGIS Experience Builder |
| Anne Arundel County | Annapolis | 594,582 | ArcGIS Experience Builder |
| Baltimore City | — | 565,239 | ArcGIS Experience Builder |
| Baltimore County | Towson | 844,703 | county web map |
| Calvert County | Prince Frederick | 94,728 | ArcGIS Experience Builder |
| Caroline County | Denton | 33,593 | ArcGIS Experience Builder |
| Carroll County | Westminster | 176,639 | ArcGIS Experience Builder |
| Cecil County | Elkton | 105,672 | ArcGIS Experience Builder |
| Charles County | La Plata | 171,973 | ArcGIS Experience Builder |
| Dorchester County | Cambridge | 32,879 | ArcGIS Experience Builder |
| Frederick County | Frederick | 293,391 | ArcGIS Experience Builder |
| Garrett County | Oakland | 28,423 | ArcGIS Experience Builder |
| Harford County | Bel Air | 264,644 | ArcGIS Experience Builder |
| Howard County | Ellicott City | 336,001 | ArcGIS Experience Builder |
| Kent County | Chestertown | 19,303 | ArcGIS Experience Builder |
| Montgomery County | Rockville | 1,058,474 | ArcGIS Experience Builder |
| Prince George's County | Upper Marlboro | 947,430 | county web map |
| Queen Anne's County | Centreville | 52,508 | ArcGIS Experience Builder |
| Somerset County | Princess Anne | 24,910 | ArcGIS Experience Builder |
| St. Mary's County | Leonardtown | 115,281 | ArcGIS Experience Builder |
| Talbot County | Easton | 37,823 | ArcGIS Experience Builder |
| Washington County | Hagerstown | 155,813 | ArcGIS Experience Builder |
| Wicomico County | Salisbury | 104,800 | ArcGIS Experience Builder |
| Worcester County | Snow Hill | 54,171 | ArcGIS Experience Builder |
Before you rely on what you find
Treat these maps as a starting point. Parcel outlines are tax-map drawings and can be off from the true line; the recorded deed and a licensed survey are what count. To check flood zones, soils or wetlands for a spot you found, open it on the Platbookmapper Land Map, which pulls FEMA, USDA and U.S. Fish & Wildlife layers.
See also: Maryland on Platbookmapper.
Related guides
Sources
- Platbookmapper county GIS directory (the live data file behind our county pages, pulled October 18, 2026). Viewer types are read from each official map's web address.
- U.S. Census Bureau, Population Estimates Program, county totals, Vintage 2023 (July 1, 2023 estimates)
- County seats: Wikidata (county seat property), cross-checked against Census place names.