Public ArcGIS FeatureServer endpoint for Ada County parcel data. URL, supported fields, and a working sample query, copy it, or open it directly in the UrbanKit parcel lookup tool.
https://services2.arcgis.com/dgGjZc6xAH5m5JyP/arcgis/rest/services/Parcels/FeatureServer/5PARCELParcel NumberADDRESSProperty AddressPROPADDNUMAddress NumberPROPSTNMStreet Namecurl -s 'https://services2.arcgis.com/dgGjZc6xAH5m5JyP/arcgis/rest/services/Parcels/FeatureServer/5/query?where=UPPER(ADDRESS)+LIKE+UPPER('%25MAIN+ST%25')&outFields=PARCEL,ADDRESS,CITY_STATE,TOTALVALUE,ZONING&returnGeometry=false&f=json&resultRecordCount=10'https://services2.arcgis.com/dgGjZc6xAH5m5JyP/arcgis/rest/services/Parcels/FeatureServer/5/query?where=UPPER(ADDRESS)+LIKE+UPPER('%MAIN+ST%')&outFields=PARCEL,ADDRESS,CITY_STATE,TOTALVALUE,ZONING&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| PARCEL | Parcel Number | YES |
| ADDRESS | Property Address | YES |
| PROPADDNUM | Address Number | YES |
| PROPSTNM | Street Name | YES |
| CITY_STATE | City and State | NO |
| TOTALVALUE | Total Assessed Value | NO |
| ZONING | Zoning Code | NO |
| ACRES | Acreage | NO |
| HOMEEXEMPT | Homeowner Exemption | NO |
| PROPYEAR | Property Year | NO |
| SUBNM | Subdivision Name | NO |
| CODEAREA | Tax Code Area | NO |
28 fields confirmed. This is the Ada County Assessor parcel layer backing the county's GIS parcel viewer. Key fields: PARCEL (parcel number), ADDRESS (full formatted address), property address components (PROPADDNUM, PROPPREDIR, PROPSTNM, PROPSTTYPE, PROPPOST, PROPUNIT, PROPUNUM), CITY_STATE, legal description lines (LEGAL1-LEGAL5), ZONING, BANKCODE, CODEAREA (tax code area), TOTALVALUE (total assessed value), HOMEEXEMPT (homeowner exemption amount), ACRES, SECTION, SUBNM (subdivision name). NOTE: Owner name is NOT available on this public REST layer. Ada County keeps ownership data in a separate non-public table. For owner lookup, use the Ada County Assessor property search portal at assessor.adacounty.id.gov. Ada County, ID is the Boise metropolitan area (FIPS 16001); Boise is the state capital of Idaho.
Ada County Assessor's Office GIS, https://www.adacounty.id.gov/assessor/gis/
Ada County's Parcel layer exposes a parcel identifier (Parcel Number) and address fields (Property Address, Address Number, Street Name). Use it for address-to-PIN lookups and identifier queries. 4 of 12 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 2026-05-15.
/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 Ada County actually publishes, not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
services2.arcgis.com serves Ada County, Idaho 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 Ada County's FeatureServer 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.
Ada County's layer is hosted on Esri ArcGIS Online. Public ArcGIS endpoints rarely rate-limit individual reads, but services2.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.