Public ArcGIS MapServer endpoint for Onondaga County parcel data. URL, supported fields, and a working sample query, copy it, or open it directly in the UrbanKit parcel lookup tool.
https://gisservices.its.ny.gov/arcgis/rest/services/NYS_Tax_Parcels_Public/MapServer/1COUNTY_NAMECounty Name (e.g. Onondaga)PRIMARY_OWNERPrimary Owner NamePARCEL_ADDRParcel AddressPRINT_KEYPrint KeySWIS_SBL_IDSWIS-SBL Parcel IdentifierMAIL_ADDRMailing Addresscurl -s 'https://gisservices.its.ny.gov/arcgis/rest/services/NYS_Tax_Parcels_Public/MapServer/1/query?where=COUNTY_NAME%3D'Onondaga'+AND+UPPER(PRIMARY_OWNER)+LIKE+UPPER('%25SMITH%25')&outFields=COUNTY_NAME,PRIMARY_OWNER,PARCEL_ADDR,SWIS_SBL_ID&returnGeometry=false&f=json&resultRecordCount=10'https://gisservices.its.ny.gov/arcgis/rest/services/NYS_Tax_Parcels_Public/MapServer/1/query?where=COUNTY_NAME='Onondaga'+AND+UPPER(PRIMARY_OWNER)+LIKE+UPPER('%SMITH%')&outFields=COUNTY_NAME,PRIMARY_OWNER,PARCEL_ADDR,SWIS_SBL_ID&returnGeometry=false&f=json&resultRecordCount=10Open this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| COUNTY_NAME | County Name (e.g. Onondaga) | YES |
| PRIMARY_OWNER | Primary Owner Name | YES |
| PARCEL_ADDR | Parcel Address | YES |
| PRINT_KEY | Print Key | YES |
| SWIS_SBL_ID | SWIS-SBL Parcel Identifier | YES |
| MAIL_ADDR | Mailing Address | YES |
| MAIL_CITY | Mailing City | NO |
| TOTAL_AV | Total Assessed Value | NO |
| PROP_CLASS | Property Class Code | NO |
| YR_BLT | Year Built | NO |
Onondaga County (Syracuse, FIPS 36067) is served by the NYS Tax Parcels Public statewide layer, filter with COUNTY_NAME='Onondaga'. 75+ fields including PRIMARY_OWNER, PARCEL_ADDR, SWIS_SBL_ID, PRINT_KEY, MAIL_ADDR, MAIL_CITY, TOTAL_AV, PROP_CLASS, YR_BLT. Owner query confirmed returning real residential parcels (Smith, Gregg S at 2647 Ellsworth Rd). This same statewide endpoint covers all 62 NY counties; see the NYC entry for borough-specific filtering. Note: Monroe County (Rochester, 36055) has its own dedicated hosted service with richer attributes, see ny-monroe entry. The NYS statewide service may not always return Monroe data; use the dedicated Monroe endpoint for that county.
NYS Office of Information Technology Services GIS (statewide layer), https://gisservices.its.ny.gov/arcgis/rest/services/NYS_Tax_Parcels_Public/MapServer
Onondaga County's NYS_Tax_Parcels_Public layer exposes a parcel identifier (SWIS-SBL Parcel Identifier), owner names (Primary Owner Name), and address fields (Parcel Address, Mailing Address). Use it for owner-name lookups and address-based parcel searches. 6 of 10 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 Onondaga County actually publishes, not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
gisservices.its.ny.gov serves Onondaga County, New York 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 Onondaga 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.
Onondaga County's layer is hosted by the county on gisservices.its.ny.gov. Public ArcGIS endpoints rarely rate-limit individual reads, but gisservices.its.ny.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.