Public ArcGIS MapServer endpoint for Gallatin 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 Gallatin County parcel search runs this same layer in your browser, no account and no API key.
Search Gallatin County parcelsHave a street address but not the parcel number? Find the parcel number by address.
https://gisservice.mt.gov/arcgis/rest/services/msdi_cadastral_map_v1/MapServer/1Field by field, whether any endpoint we index for Gallatin 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 | 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. |
| 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. |
PARCELIDParcel IDOwnerNameOwner NameAddressLine1Property Addresscurl -s 'https://gisservice.mt.gov/arcgis/rest/services/msdi_cadastral_map_v1/MapServer/1/query?where=CountyName%3D'Gallatin'+AND+UPPER(OwnerName)+LIKE+UPPER('%25SMITH%25')&outFields=PARCELID,OwnerName,AddressLine1,CityStateZip,CountyName&returnGeometry=false&f=json&resultRecordCount=10'https://gisservice.mt.gov/arcgis/rest/services/msdi_cadastral_map_v1/MapServer/1/query?where=CountyName='Gallatin'+AND+UPPER(OwnerName)+LIKE+UPPER('%SMITH%')&outFields=PARCELID,OwnerName,AddressLine1,CityStateZip,CountyName&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| PARCELID | Parcel ID | YES |
| OwnerName | Owner Name | YES |
| OwnerAddress1 | Owner Address Line 1 | NO |
| OwnerAddress2 | Owner Address Line 2 | NO |
| OwnerCity | Owner City | NO |
| OwnerState | Owner State | NO |
| OwnerZipCode | Owner ZIP Code | NO |
| AddressLine1 | Property Address | YES |
| CityStateZip | Property City/State/ZIP | NO |
| CountyName | County Name (Gallatin) | NO |
| COUNTYCD | County Code (6 = Gallatin) | NO |
| TotalValue | Total Assessed Value | NO |
| TaxYear | Tax Year | NO |
Gallatin County MT (Bozeman; county seat Bozeman; FIPS 30031; COUNTYCD 6) is served by the Montana statewide parcel layer hosted by the Montana State Library / MSDI Framework, the same layer as Yellowstone, Missoula, Cascade and Flathead. Filter CountyName='Gallatin' (TitleCase), not COUNTYCD, to scope to Gallatin County. 53,618 rows on 2026-10-10. Owner is populated on 52,960 rows (98.8%), property address (AddressLine1) on 44,881 (83.7%) and owner mailing address (OwnerAddress1) on 52,960 (98.8%); 20,648 rows carry BOZEMAN in CityStateZip. TaxYear is 2026 on 52,960 rows and null on the other 658. The layer description says the Montana Department of Revenue maintains Gallatin's rows (only Ravalli, Silver Bow, Missoula, Flathead and Yellowstone are county-maintained) and that they are copied from the Department's ORION tax appraisal database. Key fields: PARCELID, PropertyID, AssessmentCode, OwnerName, OwnerAddress1/2/3, OwnerCity, OwnerState, OwnerZipCode, AddressLine1, AddressLine2, CityStateZip, PropType, PropAccess, LevyDistrict, Township, Range, Section, LegalDescriptionShort, GISAcres, TotalBuildingValue, TotalLandValue, TotalValue, TaxYear. The layer allows 2,000 rows per page with pagination and answers cross-origin requests (the server echoes the request Origin). Verified 2026-10-10 with an Origin: https://urbankitstudio.com header: an owner SMITH search matches 354 rows and a MAIN ST property-address search 431; the control county Yellowstone answers the same queries with 83,910 rows and 82,759 owners. COUNTYCD is 6 on every Gallatin row.
Montana State Library / Montana Spatial Data Infrastructure (MSDI), https://msl.mt.gov/geoinfo/
Gallatin County's Montana Parcels layer exposes a parcel identifier (Parcel ID), owner names (Owner Name), and address fields (Property Address). Use it for owner-name lookups and address-based parcel searches. 3 of 13 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 2026-10-10.
/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 Gallatin County actually publishes, not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
gisservice.mt.gov serves Gallatin County, Montana 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 Gallatin County's MapServer layer on 2026-10-10. 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.
Gallatin County's layer is hosted by the county on gisservice.mt.gov. Public ArcGIS endpoints rarely rate-limit individual reads, but gisservice.mt.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.