Public ArcGIS MapServer endpoint for Duval County parcel data. URL, supported fields, and a working sample query — copy it, or open it directly in the UrbanKit parcel lookup tool.
https://maps.coj.net/coj/rest/services/CityBiz/Parcels/MapServer/0/query?where=UPPER(LNAMEOWNER)+LIKE+UPPER('%SMITH%')&outFields=RE,LNAMEOWNER,STREET_NO,ST_NAME,ADDRCITY&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| RE | Real Estate Number (Parcel ID) | YES |
| LNAMEOWNER | Owner Name | YES |
| STREET_NO | Street Number | NO |
| ST_NAME | Street Name | YES |
| ADDRCITY | Address City | NO |
| MAILADDR1 | Mailing Address 1 | NO |
| MAILCITY | Mailing City | NO |
| MAILSTATE | Mailing State | NO |
| MAILZIP | Mailing ZIP | NO |
Duval County is consolidated with the City of Jacksonville (consolidated city-county). The CityBiz/Parcels MapServer is the authoritative parcel layer for the consolidated jurisdiction. 70+ fields confirmed including RE (real estate number / parcel ID), LNAMEOWNER, LNAME2, STREET_NO, ST_NAME, ADDRCITY, MAILADDR1/2/3, MAILCITY, MAILSTATE, MAILZIP, PUSE (property use), DESCPU (description), ZIPCODE, FLD_ZONE, ACRES, TOT_LND_VA, TOT_BLD_VA, TOT_IMPR_V, SALESLDD/MM/YY, CAMA_VAL, CURREXEMPT. Owner search uses LNAMEOWNER field (last-name-first format). Verified 2026-05-15: SMITH returns Jacksonville addresses.
City of Jacksonville / Duval County GIS (COJ Information Technologies) — https://www.coj.net/departments/finance/information-technologies/geographic-information-systems-(gis)
/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 this 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.