Public ArcGIS MapServer endpoint for Marion County parcel data. URL, supported fields, and a working sample query, copy it, or open it directly in the UrbanKit parcel lookup tool.
https://gis.co.marion.or.us/arcgis/rest/services/Public/Parcels/MapServer/0TAXLOTTax Lot NumberTAXACCTTax Account NumberOWNERNAMEOwner NameSITUSSitus Addresscurl -s 'https://gis.co.marion.or.us/arcgis/rest/services/Public/Parcels/MapServer/0/query?where=UPPER(OWNERNAME)+LIKE+UPPER('%25SMITH%25')&outFields=TAXLOT,TAXACCT,OWNERNAME,SITUS,ACRES,RMVTOTAL&returnGeometry=false&f=json&resultRecordCount=10'https://gis.co.marion.or.us/arcgis/rest/services/Public/Parcels/MapServer/0/query?where=UPPER(OWNERNAME)+LIKE+UPPER('%SMITH%')&outFields=TAXLOT,TAXACCT,OWNERNAME,SITUS,ACRES,RMVTOTAL&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| TAXLOT | Tax Lot Number | YES |
| TAXACCT | Tax Account Number | YES |
| OWNERNAME | Owner Name | YES |
| SITUS | Situs Address | YES |
| ACRES | Map Acreage | NO |
| RMVLND | Real Market Value (Land) | NO |
| RMVIMP | Real Market Value (Improvements) | NO |
| RMVTOTAL | Real Market Value (Total) | NO |
| ASSDVAL | Assessed Value | NO |
| TAXCODE | Tax Code Area | NO |
| ZONECODE | Zoning Code | NO |
| YEARBUILT | Year Built | NO |
46 fields confirmed including OBJECTID, SHAPE, TAXLOT, TAXACCT, OTHERACCTS, ALT_TAXLOT, ALT_TAXACCT, STREETNUM, PRE_DIR, STREETNAME, STREETTYPE, POST_DIR, UNITNUM, SITUS, SITUSCSZ, PLATNAME, BLOCK, LOT, ACRES, LASTUPDATE, INSTNUM, INSTTYPE, INSTDATE, SALEPRICE, OWNERNAME, OWNERADDR, OWNERCSZ, ZONECODE, ZONEAUTH, ZONEWEB, YEARBUILT, BLDGAREA, LIVINGAREA, PROPCLASS, PRPCLSDESC, RMVLND, RMVIMP, RMVTOTAL, ASSDVAL, TAXCODE, CITY, SCHLDIST, FIREDIST, REFLINK, MAPLINK, TAXLOTNS. Owner name confirmed live: OWNERNAME field returns real owner names (e.g., 'SMITH, BENJAMIN C 25% & SMITH, CYNTHIA 25%...'). Covers Salem metro and all of Marion County. SITUS is the combined situs address string; SITUSCSZ is the city-state-ZIP. Capabilities: Map, Query, Data. maxRecordCount=1000.
Marion County GIS / Marion County Assessment & Taxation, https://gis.co.marion.or.us/
Marion County's Parcels layer exposes owner names (Owner Name) and address fields (Situs Address). Use it for owner-name lookups and address-based parcel searches. 4 of 12 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 2026-05-15.
/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 Marion County actually publishes, not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
gis.co.marion.or.us serves Marion County, Oregon 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 Marion County's MapServer layer on 2026-05-15. 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.
Marion County's layer is hosted by the county on gis.co.marion.or.us. Public ArcGIS endpoints rarely rate-limit individual reads, but gis.co.marion.or.us 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.