Public ArcGIS MapServer endpoint for Brown County parcel data. URL, supported fields, and a working sample query — copy it, or open it directly in the UrbanKit parcel lookup tool.
https://gis.browncountywi.gov/arcgis/rest/services/ParcelPolygons/MapServer/1/query?where=UPPER(OWNERNME1) LIKE UPPER('%SMITH%')&outFields=PARCELID,OWNERNME1,SITEADRESS&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| PARCELID | Parcel ID | YES |
| OWNERNME1 | Owner Name 1 | YES |
| OWNERNME2 | Owner Name 2 | YES |
| SITEADRESS | Site Address | YES |
| PSTLADRESS | Postal Address | YES |
| Municipality | Municipality | NO |
Brown County (Green Bay metro, county seat Green Bay) hosts ParcelPolygons/MapServer with 2 layers; layer 1 (TaxParcel) is the polygon tax parcel layer with ownership fields. Fields include PARCELID, ParcelType, Municipality, MunicipalZoning, OWNERNME1, OWNERNME2, PSTLADRESS, SITEADRESS, PublicOwner, FirstName1/LastName1/FirstName2/LastName2/StreetName fields (individual name parts), RecentOwnershipChangeDate, Parcels2005/2010/2014/2017 (historical vintage flags), Surveys, ROD (Register of Deeds). Query confirmed live: UPPER(OWNERNME1) LIKE '%SMITH%' returns real results (e.g., 'SMITH SUSAN C REVOCABLE TRUST' at '2674 FOXFIRE DR'). Layer 0 (TaxParcel-smallScale) is the same polygon layer rendered at smaller scales. ParcelslDynamic/MapServer/6 (TaxParcels) is an alternate service containing the same ownership data. The county's BrownDog Online GIS map at gis.browncountywi.gov is the public viewer. PublicOwner field is present but may be null for many records — use OWNERNME1/OWNERNME2 for owner search.
Brown County Land Information Office — https://www.browncountywi.gov/departments/planning-and-land-services/land-information-office/
/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.