Public ArcGIS FeatureServer endpoint for Johnson 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.johnsoncountyiowa.gov/arcgis/rest/services/Parcels_AddressPoints_Roads_IC/FeatureServer/2/query?where=UPPER(DeedHolder1) LIKE UPPER('%SMITH%')&outFields=PPN,DeedHolder1,MailingName,MailingAddress1&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| PPN | Parcel Permanent Number | YES |
| DeedHolder1 | Deed Holder 1 (Owner) | YES |
| DeedHolder2 | Deed Holder 2 | YES |
| DeedHolder3 | Deed Holder 3 | YES |
| MailingName | Mailing Name | YES |
| MailingAddress1 | Mailing Address | YES |
| MailingZipCode | Mailing ZIP Code | NO |
| ContractOwner1 | Contract Owner 1 | YES |
| CityTownship | City/Township | NO |
Johnson County IA (Iowa City metro, University of Iowa, county seat Iowa City) hosts Parcels_AddressPoints_Roads_IC/FeatureServer with 3 layers; layer 2 (Parcels_Auditor_Year) is the polygon parcel layer joined to Auditor data. Fields include PPN, FeaType, Dist, Districtname, AreaSchool, CityTownShipAbbrev, SchoolAbbrev, CityTownship, School, AlternateID, MailingName, MailingAddress1/2/3, MailingZipCode, Section, Township, Range, SubDivision, Block, LegalDescription, DeedHolder1/2/3, ContractOwner1/2/3/4. Query confirmed live: UPPER(DeedHolder1) LIKE '%SMITH%' returns real results (e.g., 'JEAN E MANASMITH REVOCABLE TRUST' with MailingName='JEAN E MANASMITH'). Layer 0 is Site_Addresses (address points), layer 1 is Road Centerlines. Johnson County IA (FIPS 19103) must not be confused with Johnson County KS (20091), Johnson County IN (18081), or Johnson County TX (48251). The Property Information Viewer at gis.johnsoncountyiowa.gov/piv/ provides the public map interface.
Johnson County Iowa Department of Geographic Information Systems — https://www.johnsoncountyiowa.gov/department-of-geographic-information-systems
/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.