Public ArcGIS FeatureServer endpoint for Maui County parcel data. URL, supported fields, and a working sample query, copy it, or open it directly in the UrbanKit parcel lookup tool.
https://services1.arcgis.com/x4h61KaW16vFs7PM/arcgis/rest/services/Parcels_2024_Owners/FeatureServer/196OWNEROwner Nametmk_txtTax Map Key (TMK / APN)TMK_1Tax Map Key (alternate)curl -s 'https://services1.arcgis.com/x4h61KaW16vFs7PM/arcgis/rest/services/Parcels_2024_Owners/FeatureServer/196/query?where=OWNER+LIKE+'%25SMITH%25'&outFields=OWNER,tmk_txt,TMK_1&returnGeometry=false&f=json&resultRecordCount=10'
https://services1.arcgis.com/x4h61KaW16vFs7PM/arcgis/rest/services/Parcels_2024_Owners/FeatureServer/196/query?where=OWNER+LIKE+'%SMITH%'&outFields=OWNER,tmk_txt,TMK_1&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 (TMK / APN) | YES |
| TMK_1 | Tax Map Key (alternate) | YES |
Maui County HI (the islands of Maui, Molokai, and Lanai; county seat Wailuku; FIPS 15009; pop. ~165,000) publishes a public ArcGIS Online FeatureServer parcel layer (Parcels_2024_Owners/FeatureServer/196, no token required). Hawaii uses the Tax Map Key (TMK) system: tmk_txt and TMK_1 hold the TMK (APN equivalent). Key fields: OWNER (owner name, searchable, already stored UPPERCASE), tmk_txt / TMK_1 (TMK). IMPORTANT. Owner search must use OWNER LIKE '%NAME%' WITHOUT UPPER(): this layer returns HTTP 400 if UPPER() is applied to the field, and the data is already uppercase so no case folding is needed. CAVEAT: multi-owner parcels are duplicated. The layer has one row per owner, so the ~141,239 feature count exceeds the number of unique parcels; dedupe on tmk_txt when counting distinct parcels. Verified 2026-06-20: OWNER LIKE '%SMITH%' returns Maui/Molokai/Lanai parcels.
County of Maui, GIS Division, https://www.mauicounty.gov/1933/GIS-Maps
Maui County's Parcels 2024 Owners layer exposes a parcel identifier (Tax Map Key (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 FeatureServer layer, so edits and applyEdits operations are technically exposed (read access only is published here); 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 Maui County actually publishes, not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
services1.arcgis.com serves Maui County, Hawaii 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 Maui County's FeatureServer layer on 2026-06-20. 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.
Maui County's layer is hosted on Esri ArcGIS Online. Public ArcGIS endpoints rarely rate-limit individual reads, but services1.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.