Public ArcGIS MapServer endpoint for Baltimore County parcel data. URL, supported fields, and a working sample query, copy it, or open it directly in the UrbanKit parcel lookup tool.
This page is the endpoint reference. If you came here to find a specific property, the Baltimore County parcel search runs this same layer in your browser, no account and no API key.
Search Baltimore County parcelsHave a street address but not the parcel number? Find the parcel number by address.
https://bcgis.baltimorecountymd.gov/arcgis/rest/services/Property/Property/MapServer/1Field by field, whether any endpoint we index for Baltimore County answers it, and the evidence for each. We only call a field restricted when there is a stated reason we can cite. Everything else here is a fact about the services we index, not a claim about the law.
| Field | Status | Basis |
|---|---|---|
| APN | Answered | Documented in a field list on an endpoint we index. Not every row is populated. |
| Owner name | Answered | Documented in a field list on an endpoint we index. Not every row is populated. |
| Owner mailing address | Answered | Documented in a field list on an endpoint we index. Not every row is populated. |
| Site address | Answered | Documented in a field list on an endpoint we index. Not every row is populated. |
| Geometry | Answered | Documented in a field list on an endpoint we index. Not every row is populated. |
| Land use | Not published | No endpoint we index for this county documents this field, so a query cannot ask for it. That is a fact about the services we index, not a legal restriction, and not a statement that the county holds no such record. Where to request it. |
| Zoning | Not published | No endpoint we index for this county documents this field, so a query cannot ask for it. That is a fact about the services we index, not a legal restriction, and not a statement that the county holds no such record. Where to request it. |
TAXPINTax PINOWNER_NA1Owner Name 1PREMISE_ADDRESSSite AddressADDRESS_1Owner Mailing Address 1STREETNAMESite Street Namecurl -s 'https://bcgis.baltimorecountymd.gov/arcgis/rest/services/Property/Property/MapServer/1/query?where=UPPER(OWNER_NA1)+LIKE+UPPER('%25SMITH%25')&outFields=TAXPIN,OWNER_NA1,ADDRESS_1,ST_NUM,STREETNAME,CITY&returnGeometry=false&f=json&resultRecordCount=10'https://bcgis.baltimorecountymd.gov/arcgis/rest/services/Property/Property/MapServer/1/query?where=UPPER(OWNER_NA1)+LIKE+UPPER('%SMITH%')&outFields=TAXPIN,OWNER_NA1,ADDRESS_1,ST_NUM,STREETNAME,CITY&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| TAXPIN | Tax PIN | YES |
| OWNER_NA1 | Owner Name 1 | YES |
| OWNER_NA2 | Owner Name 2 | NO |
| PREMISE_ADDRESS | Site Address | YES |
| ADDRESS_1 | Owner Mailing Address 1 | YES |
| ADDRESS_2 | Owner Mailing Address 2 | NO |
| OWNER_CITY | Owner Mailing City | NO |
| OWNERSTATE | Owner Mailing State | NO |
| OWNER_ZIP | Owner Mailing ZIP | NO |
| ST_NUM | Site Street Number | NO |
| STREETNAME | Site Street Name | YES |
| CITY | Site City | NO |
| ZIP_CODE | Site ZIP | NO |
| DISTRICT | Assessment District | NO |
| YEAR_BUILT | Year Built | NO |
Baltimore County (county seat Towson; a separate jurisdiction from Baltimore City) publishes tax parcels as sub-layer 1 'Tax parcel' of the Property/Property MapServer on bcgis.baltimorecountymd.gov, and bcgisdata.baltimorecountymd.gov serves the identical service as a fallback. The layer carries the tax account number (TAXPIN), owner names (OWNER_NA1, OWNER_NA2 and the combined FULL_OWNER_NAME), the owner mailing address (ADDRESS_1, ADDRESS_2, OWNER_CITY, OWNERSTATE, OWNER_ZIP), the premise address (PREMISE_ADDRESS plus ST_NUM, STREETNAME, CITY and ZIP_CODE), land use, year built, total value and a link to the state SDAT record. CORS: the server reflects the request's Origin in Access-Control-Allow-Origin, and it also sends a misspelled Allow-Control-Allow-Origin: * header that browsers ignore. Re-verified 2026-09-26: the layer holds 374,909 parcels and an owner-name query returned live rows. Maryland's statewide MD_PropertyData layer carries owner mailing addresses but no owner names, so this county layer is the better source.
Baltimore County Government, Office of Information Technology, GIS, https://www.baltimorecountymd.gov/departments/information-technology/gis
Baltimore County's Tax parcel layer exposes a parcel identifier (Tax PIN), owner names (Owner Name 1, Owner Mailing Address 1), and address fields (Site Address, Site Street Name). Use it for owner-name lookups and address-based parcel searches. 5 of 15 listed fields accept queries; the rest are returned on read but not indexed for search. Served as an ArcGIS MapServer layer, which supports query operations but not write operations; last verified 2026-09-26.
/query?where=…&outFields=*&f=jsonto the URL. The sample query above is a working example you can paste into a browser tab to see the raw JSON response.Counties publish parcel data through their own ArcGIS Server installations, each with its own schema. One county uses APN, another uses PIN, a third uses PARCEL_ID. Some expose owner names; others keep them on a separate assessor's portal. The searchable fields list above reflects what Baltimore County actually publishes, not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
bcgis.baltimorecountymd.gov serves Baltimore County, Maryland parcels over public ArcGIS REST, but, like most county servers, it may not send the CORS headers a browser needs for a cross-origin fetch. If a direct browser call fails, the layer still works from curl, Postman, or a server-side script; the UrbanKit parcel lookup tool proxies the request, so a search that succeeds there confirms the layer is genuinely public.
We last verified Baltimore County's MapServer layer on 2026-09-26. County GIS teams move services without notice, so if you hit a fresh 404, tell us and we'll re-check. Atlas entries are re-verified on a rolling basis.
Baltimore County's layer is hosted by the county on bcgis.baltimorecountymd.gov. Public ArcGIS endpoints rarely rate-limit individual reads, but bcgis.baltimorecountymd.gov can throttle heavy automated traffic at the host level. Page through results with resultOffset / resultRecordCount and request only the fields you need. There's no API key and no charge from the county.