Maryland county
parcel REST APIs.

3 counties indexed. ArcGIS FeatureServer and MapServer URLs, with supported search fields per layer.

Endpoint URLs · 3 counties

Montgomery County, MDhttps://mcmaps.org/server11/rest/services/Overlays/MCAtlas_Property_Points/FeatureServer/0
Prince George's County, MDhttps://services1.arcgis.com/qS7AYixGtf3sv8B6/arcgis/rest/services/Property_Flattened_Py/FeatureServer/0
Baltimore County, MDhttps://bcgis.baltimorecountymd.gov/arcgis/rest/services/Property/Property/MapServer/1

Looking for one property instead of an endpoint? Type a Maryland street address into Find My Parcel Number and it returns the parcel number from the county's own records.

Counties indexed in this state, with endpoint counts, supported fields, and the registry's listing status. The registry listing is a curation record, not a live check — see the status page for what the liveness probe last observed.
County	Endpoints	Searchable fields	Registry listing	Action
Baltimore County	1	Tax PIN · Owner Name 1 · Site Address +2	LISTED LIVE	Open
Montgomery County	1	Tax Account Number · Owner Name · Owner Name 2 +5	LISTED LIVE	Open
Prince George's County	1	Account Number · Property ID · Owner Name +7	LISTED LIVE	Open

County index · 3 counties

All 3 Maryland counties

Each county links to its atlas entry, endpoint URL, searchable fields, and a sample query where one is published.

Questions, with answers

Maryland parcel REST API, common questions

Which Maryland counties publish a public parcel ArcGIS REST API?

3 Maryland counties are indexed in the UrbanKit atlas with verified public REST endpoints: Montgomery, Prince George's, and Baltimore. Each exposes an owner-name field you can search directly on the public layer.

How do I search Maryland parcels by owner name?

Montgomery, Prince George's, and Baltimore expose an owner-name field on the public REST layer. Montgomery, for example, uses the OWNERS_NAME field. A case-insensitive search is ?where=UPPER(OWNERS_NAME)%20LIKE%20UPPER('%25SMITH%25')&outFields=*&f=json. Open a county's page here for its full field list and a ready-to-run sample query.

What is the ArcGIS REST URL for parcels in Montgomery, Maryland?

Montgomery publishes parcels at https://mcmaps.org/server11/rest/services/Overlays/MCAtlas_Property_Points/FeatureServer/0, a FeatureServer (layer 0). It indexes by Tax Account Number, Owner Name, Owner Name 2, and Site House Number. Owner-name search: UPPER(OWNERS_NAME) LIKE UPPER('%25SMITH%25').

Do Maryland parcel layers use ArcGIS FeatureServer or MapServer?

Both. Maryland uses a mix: Montgomery and Prince George's publish ArcGIS FeatureServer layers, while Baltimore use MapServer. Both support /query, so the same owner, parcel-ID, and address lookups work against either.

Listing missing or moved? and include its current URL if you have it. A full four-shard sweep checks every endpoint every two hours, with degraded endpoints re-checked every 30 minutes.