Public ArcGIS FeatureServer endpoint for Rock Island County parcel data. URL, supported fields, and a working sample query, copy it, or open it directly in the UrbanKit parcel lookup tool.
This page is the endpoint reference. If you came here to find a specific property, the Rock Island County parcel search runs this same layer in your browser, no account and no API key.
Search Rock Island County parcelsHave a street address but not the parcel number? Find the parcel number by address.
https://services9.arcgis.com/6FnscPPlUa9DXXOk/arcgis/rest/services/Parcels/FeatureServer/0Field by field, whether any endpoint we index for Rock Island County answers it, and the evidence for each. We only call a field restricted when there is a stated reason we can cite. Everything else here is a fact about the services we index, not a claim about the law.
| Field | Status | Basis |
|---|---|---|
| APN | Answered | Documented in a field list on an endpoint we index. Not every row is populated. |
| Owner name | Answered | Documented in a field list on an endpoint we index. Not every row is populated. |
| Owner mailing address | Answered | Documented in a field list on an endpoint we index. Not every row is populated. |
| Site address | Answered | Documented in a field list on an endpoint we index. Not every row is populated. |
| Geometry | Answered | Documented in a field list on an endpoint we index. Not every row is populated. |
| Land use | Not published | No endpoint we index for this county documents this field, so a query cannot ask for it. That is a fact about the services we index, not a legal restriction, and not a statement that the county holds no such record. Where to request it. |
| Zoning | Not published | No endpoint we index for this county documents this field, so a query cannot ask for it. That is a fact about the services we index, not a legal restriction, and not a statement that the county holds no such record. Where to request it. |
parcel_numberParcel Number (PIN)owner1_nameOwner Nametaxbill_nameTax Bill Namesite_addressSite AddressSite_CitySite Cityowner1_address1Owner Mailing Addresscurl -s 'https://services9.arcgis.com/6FnscPPlUa9DXXOk/arcgis/rest/services/Parcels/FeatureServer/0/query?where=UPPER(site_address)%20LIKE%20'%251504%203RD%20AVE%25'&outFields=parcel_number,site_address,owner1_name,taxbill_name&resultRecordCount=3&returnGeometry=false&f=json'
https://services9.arcgis.com/6FnscPPlUa9DXXOk/arcgis/rest/services/Parcels/FeatureServer/0/query?where=UPPER(site_address) LIKE '%1504 3RD AVE%'&outFields=parcel_number,site_address,owner1_name,taxbill_name&resultRecordCount=3&returnGeometry=false&f=jsonOpen this URL in a browser tab to see the raw ArcGIS JSON response.
| Field name | Label | Searchable |
|---|---|---|
| parcel_number | Parcel Number (PIN) | YES |
| owner1_name | Owner Name | YES |
| taxbill_name | Tax Bill Name | YES |
| site_address | Site Address | YES |
| Site_City | Site City | YES |
| owner1_address1 | Owner Mailing Address | YES |
Rock Island County, Illinois (FIPS 17161; county seat Rock Island). Served by the county GIS department's ArcGIS Online feature service (services9.arcgis.com, item 9cae8a64ab0e4cea99758f741ca43b3c, "Parcels", owner thirty34jb, the county GIS account): Parcels FeatureServer layer 0, "parcel_layer", 65,948 rows, last edited 2026-10-01, tax year 2025 (taxbill_year). The county's own host, gis.rockislandcountyil.gov (Hosted/Parcels/FeatureServer/0), now answers "Token Required", so this record points at the ArcGIS Online copy. Informational only and not a legal record: verify with the Rock Island County Assessor. Verified 2026-10-18: a bounded query counts 65,948 rows, and an address query for 1504 3RD AVE returns two county-owned parcels. Share of rows filled, read 2026-10-18: parcel_number 99.7% (65,763 rows), owner1_name 99.7% (every row with a parcel number), taxbill_name 99.7%, site_address 88.9% (58,640 rows, with Site_City and Site_Zip). The owner mailing address is owner1_address1, owner1_address2, Owner_City, Owner_State and Owner_Zip; the tax-bill address is a separate set (taxbill_addr1, taxbill_addr2, taxbill_csz). The layer also carries the assessed values (EMV, EAV, farm and non-farm land and building), the last sale (date_last_sale, gross_sale_price, net_sale_price), class, township, legal description, Zoning, YRBuilt, TOTSQFT and each parcel's longitude and latitude; the atlas lists the fields above. The native spatial reference is Illinois State Plane West, feet (WKID 3436), so a point query passes inSR=4326. The layer pages and declares maxRecordCount 2000. CORS: the server answers with Access-Control-Allow-Origin *. License: the ArcGIS Online item's license text (the licenseUrl) reads "For use by the general public". The county's Data Release Policy (https://rockislandcountyil.gov/DocumentCenter/View/1159/Data-Release-PDF) governs requested file releases: the data is provided as is with no warranty and with a source credit of Rock Island County GIS, and it states no resale ban and no fee; the county's site says data requests go to GIS for costs. Credit Rock Island County GIS.
Rock Island County GIS Department (Josh Boudi, 309-558-3772), https://www.rockislandcountyil.gov/
Rock Island County's parcel_layer layer exposes a parcel identifier (Parcel Number (PIN)), owner names (Owner Name, Owner Mailing Address), and address fields (Site Address, Site City). Use it for owner-name lookups and address-based parcel searches. All 6 listed fields accept queries. Served as an ArcGIS FeatureServer layer, so edits and applyEdits operations are technically exposed (read access only is published here); last verified 2026-10-18.
/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 Rock Island County actually publishes, not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
services9.arcgis.com serves Rock Island County, Illinois 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 Rock Island County's FeatureServer layer on 2026-10-18. 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.
Rock Island County's layer is hosted on Esri ArcGIS Online. Public ArcGIS endpoints rarely rate-limit individual reads, but services9.arcgis.com 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.