Public ArcGIS FeatureServer endpoint for Denver 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.colorado.gov/public/rest/services/Address_and_Parcel/Colorado_Public_Parcels/FeatureServer/0parcel_idParcel IDcountyNameCounty Name (filter: 'Denver')countyFipsCounty FIPS Code (filter: '031')situsAddSitus AddressownerOwner Nameowner2Owner Name 2curl -s 'https://gis.colorado.gov/public/rest/services/Address_and_Parcel/Colorado_Public_Parcels/FeatureServer/0/query?where=countyName+%3D+'Denver'+AND+UPPER(owner)+LIKE+UPPER('%25SMITH%25')&outFields=parcel_id,owner,situsAdd,sitAddCty,countyFips&returnGeometry=false&f=json&resultRecordCount=10'https://gis.colorado.gov/public/rest/services/Address_and_Parcel/Colorado_Public_Parcels/FeatureServer/0/query?where=countyName+=+'Denver'+AND+UPPER(owner)+LIKE+UPPER('%SMITH%')&outFields=parcel_id,owner,situsAdd,sitAddCty,countyFips&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| parcel_id | Parcel ID | YES |
| countyName | County Name (filter: 'Denver') | YES |
| countyFips | County FIPS Code (filter: '031') | YES |
| situsAdd | Situs Address | YES |
| sitAddCty | Situs City | NO |
| sitAddZip | Situs ZIP | NO |
| owner | Owner Name | YES |
| owner2 | Owner Name 2 | YES |
| ownerAdd | Owner Address | NO |
| legalDesc | Legal Description | NO |
| zoningCode | Zoning Code | NO |
| saleDate | Sale Date | NO |
| salePrice | Sale Price | NO |
| apprValTot | Total Appraised Value | NO |
34 fields confirmed including parcel_id, countyName, countyFips, situsAdd, sitAddCty, sitAddZip, owner, owner2, ownerAdd, ownAddCty, ownAddStt, ownAddZip, legalDesc, landSqft, landAcres, block, lot, subCode, subName, zoningCode, zoningDesc, landUseCde, landUseDsc, saleDate, salePrice, apprValTot, asedValTot, URL, dateReceived. This is a statewide composite. Query by countyName='Denver' OR countyFips='031' (note: FIPS here is the 3-digit county portion, not the full 5-digit). Owner query tested and confirmed with real Denver addresses. This same endpoint covers all 64 Colorado counties; filter by countyName or countyFips for any of them. Denver is a consolidated city-county (countyName='Denver' and cityName='Denver' are the same entity).
Colorado Governor's Office of Information Technology (OIT), Colorado Geographic Information Systems Program, https://gis.colorado.gov/
Denver County's Colorado_Public_Parcel_Composite layer exposes a parcel identifier (Parcel ID), owner names (Owner Name, Owner Name 2), and address fields (Situs Address). Use it for owner-name lookups and address-based parcel searches. 6 of 14 listed fields accept queries; the rest are returned on read but not indexed for search. Served as an ArcGIS FeatureServer layer, so edits and applyEdits operations are technically exposed (read access only is published here); last verified 2026-05-11.
/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 Denver County actually publishes, not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
gis.colorado.gov serves Denver County, Colorado 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 Denver County's FeatureServer layer on 2026-05-11. 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.
Denver County's layer is hosted by the county on gis.colorado.gov. Public ArcGIS endpoints rarely rate-limit individual reads, but gis.colorado.gov 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.