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/0REReal Estate Number (Parcel ID)LNAMEOWNEROwner NameST_NAMEStreet Namecurl -s 'https://maps.coj.net/coj/rest/services/CityBiz/Parcels/MapServer/0/query?where=UPPER(LNAMEOWNER)+LIKE+UPPER('%25SMITH%25')&outFields=RE,LNAMEOWNER,STREET_NO,ST_NAME,ADDRCITY&returnGeometry=false&f=json&resultRecordCount=10'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)
Duval County's Parcels layer exposes a parcel identifier (Real Estate Number (Parcel ID)), owner names (Owner Name), and address fields (Street Name). Use it for owner-name lookups and address-based parcel searches. 3 of 9 listed fields accept queries; the rest are returned on read but not indexed for search. Served as an ArcGIS MapServer layer, which supports query operations but not write operations; 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 Duval County actually publishes, not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
maps.coj.net serves Duval County, Florida 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 Duval County's MapServer 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.
Duval County's layer is hosted by the county on maps.coj.net. Public ArcGIS endpoints rarely rate-limit individual reads, but maps.coj.net 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.