Public ArcGIS FeatureServer endpoint for Clackamas 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 Clackamas County parcel search runs this same layer in your browser, no account and no API key.
Search Clackamas County parcelsHave a street address but not the parcel number? Find the parcel number by address.
https://services3.arcgis.com/I2eWXOndpF9m8oKC/arcgis/rest/services/Taxlots_CMap/FeatureServer/0Field by field, whether any endpoint we index for Clackamas 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 | Not published | The county's public Taxlots_CMap layer has no owner-name column in its field list, and the county publishes no owner name on any public layer; it routes owner questions to Assessment and Taxation. Where to request it. |
| Owner mailing address | Not published | The county's public Taxlots_CMap layer has no owner mailing-address column in its field list, and the county publishes no owner mailing address on any public layer; it routes owner questions to Assessment and Taxation. 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. |
PARCEL_NUMBERParcel NumberTLNOMap and Taxlot NumberSITUSSitus AddressSITUS_CITYSitus Citycurl -s 'https://services3.arcgis.com/I2eWXOndpF9m8oKC/arcgis/rest/services/Taxlots_CMap/FeatureServer/0/query?where=UPPER(SITUS)%20LIKE%20%27%25MAIN%20ST%25%27&outFields=PARCEL_NUMBER,TLNO,SITUS,SITUS_CITY,TOTALVAL,LANDCLASS&returnGeometry=false&resultRecordCount=10&f=json'
https://services3.arcgis.com/I2eWXOndpF9m8oKC/arcgis/rest/services/Taxlots_CMap/FeatureServer/0/query?where=UPPER(SITUS) LIKE '%MAIN ST%'&outFields=PARCEL_NUMBER,TLNO,SITUS,SITUS_CITY,TOTALVAL,LANDCLASS&returnGeometry=false&resultRecordCount=10&f=jsonOpen this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| PARCEL_NUMBER | Parcel Number | YES |
| TLNO | Map and Taxlot Number | YES |
| SITUS | Situs Address | YES |
| SITUS_CITY | Situs City | YES |
| SITUS_ZIP | Situs ZIP | NO |
| TOTALVAL | Total Value | NO |
| ASSESSEDVAL | Assessed Value | NO |
| LANDCLASS | Land Class Code | NO |
| YEARBLT | Year Built | NO |
| SALE_PRICE | Last Sale Price | NO |
Clackamas County, Oregon (county seat Oregon City) publishes its taxlots on ArcGIS Online as Taxlots_CMap FeatureServer layer 0 (tax_taxlot_cmap), from the county GIS organisation that feeds its CMap viewer: 163,927 taxlots on 2026-10-03. THERE IS NO OWNER NAME AND NO OWNER MAILING ADDRESS in the layer's field list. The county states that it does not publish property owner names online and directs owner questions to Assessment and Taxation. Searchable: PARCEL_NUMBER (8 digits, e.g. 01099411), TLNO (map and taxlot, e.g. 52E09CD01302), SITUS (site address) and SITUS_CITY, with SITUS_ZIP and SITUS_FULL alongside. The layer also carries assessed, land, building and total values, land class, year built, living area, bedrooms and bathrooms, and the last sale price and document. CORS is open (Access-Control-Allow-Origin: *) and maxRecordCount is 2000. The item's licence text is a disclaimer only (provided as is, not a land survey); the county's GIS shapefile downloads separately require accepting a data licensing agreement. A slimmer sibling service, Taxlots FeatureServer layer 0, carries only the parcel, taxlot and situs columns. Statewide layers add nothing for owner search: the Oregon Water Resources Department taxlot layer (Tax_Lots_Public_View_WGS84 MapServer layer 2, county_name='Clackamas') adds an owner mailing street with no owner name and is not registered here, the Oregon Department of Forestry's 'Clackamas County' taxlot layer declares owner fields but has query disabled, and Metro's regional RLIS 'Taxlots (Public)' dataset, per its listing, excludes ownership. Verified live 2026-10-03: UPPER(SITUS) LIKE '%MAIN ST%' returned rows (first PARCEL_NUMBER 01099411, 528 E MAIN ST, Molalla).
Clackamas County Department of Assessment and Taxation / Technology Services GIS, https://www.clackamas.us/gis
Clackamas County's tax_taxlot_cmap layer exposes a parcel identifier (Parcel Number) and address fields (Situs Address, Situs City). Use it for address-to-PIN lookups and identifier queries. 4 of 10 listed fields accept queries; the rest are returned on read but not indexed for search. Served as an ArcGIS FeatureServer layer, so edits and applyEdits operations are technically exposed (read access only is published here); last verified 2026-10-03.
/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 Clackamas County actually publishes, not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
services3.arcgis.com serves Clackamas 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 Clackamas County's FeatureServer layer on 2026-10-03. 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.
Clackamas County's layer is hosted on Esri ArcGIS Online. Public ArcGIS endpoints rarely rate-limit individual reads, but services3.arcgis.com 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.