Public ArcGIS MapServer endpoint for Kauai County parcel data. URL, supported fields, and a working sample query — copy it, or open it directly in the UrbanKit parcel lookup tool.
https://geodata.hawaii.gov/arcgis/rest/services/ParcelsZoning/MapServer/9ownerOwner Nametmk_txtTax Map Key (9-digit TMK / APN)cty_tmkCounty TMK (8-digit)curl -s 'https://geodata.hawaii.gov/arcgis/rest/services/ParcelsZoning/MapServer/9/query?where=UPPER(owner)+LIKE+UPPER('%25SMITH%25')&outFields=owner,tmk_txt,cty_tmk&returnGeometry=false&f=json&resultRecordCount=10'https://geodata.hawaii.gov/arcgis/rest/services/ParcelsZoning/MapServer/9/query?where=UPPER(owner)+LIKE+UPPER('%SMITH%')&outFields=owner,tmk_txt,cty_tmk&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| owner | Owner Name | YES |
| tmk_txt | Tax Map Key (9-digit TMK / APN) | YES |
| cty_tmk | County TMK (8-digit) | YES |
Kauai County HI (the island of Kauai plus Niihau; county seat Lihue; FIPS 15007; pop. ~73,000) parcels are published on the State of Hawaii statewide GIS portal (geodata.hawaii.gov ParcelsZoning/MapServer/9, 'Kauai County Parcels', ~25,119 features, no token required). Hawaii uses the Tax Map Key (TMK) system rather than a conventional APN: tmk_txt is the 9-digit TMK, cty_tmk the 8-digit county form. Key fields: owner (owner name — searchable), tmk_txt (9-digit TMK), cty_tmk (8-digit TMK). Owner-name search via UPPER(owner) LIKE UPPER('%NAME%') works. Verified 2026-06-20: UPPER(owner) LIKE UPPER('%SMITH%') returns Kauai parcels. Hawaii has only 5 county-equivalents statewide; each of the four main counties (Honolulu, Hawaii, Maui, Kauai) is a separate layer on the statewide ParcelsZoning service.
State of Hawaii Office of Planning and Sustainable Development — Statewide GIS Program — https://planning.hawaii.gov/gis/
Kauai County's Kauai County Parcels layer exposes a parcel identifier (Tax Map Key (9-digit TMK / APN)) and owner names (Owner Name). Use it for owner-name lookups and PIN-keyed record pulls. All 3 listed fields accept queries. Served as an ArcGIS MapServer layer, which supports query operations but not write operations; last verified 2026-06-20.
/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 Kauai County actually publishes — not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
Many county servers allow public reads but block browser cross-origin requests. The UrbanKit parcel lookup tool fetches directly from your browser; if it works there, the layer is technically public. For your own integration, you may need a same-origin proxy or server-side fetch.
Possibly — counties move services without warning. We re-verify entries weekly and flag stale ones. If you're seeing a fresh 404, please let us know and we'll update the listing.
Most are. Public ArcGIS layers don't typically rate-limit individual reads, but heavy programmatic use can trigger throttling at the host level. Be respectful — query what you need.