3 counties indexed. ArcGIS FeatureServer and MapServer URLs, with supported search fields per layer.
| County | Endpoints | Searchable fields | Status | Action |
|---|---|---|---|---|
| Allen County | 1 | Parcel Identification Number · GIS ID · Owner of Record +1 | LIVE | OPEN |
| Hamilton County | 1 | Formatted Parcel Number · Deeded Owner Name · Owner Name +4 | LIVE | OPEN |
| Marion County | 1 | Parcel Tag (internal ID) · Parcel I (identifier) · Parcel C (identifier) +4 | LIVE | OPEN |
Indiana parcel data sits at the intersection of two county offices: the county Assessor holds the assessment and ownership records, and the county Auditor processes deeds and tax payments. In practice, most Indiana counties publish parcel GIS data under the Assessor's authority, though some run joint portals. The atlas covers three counties: Hamilton (Indianapolis north suburbs), Allen (Fort Wayne metro), and Marion (Indianapolis). Marion County is a consolidated city-county — the City of Indianapolis and Marion County share government functions, which is reflected in the IndyGIS portal at maps.indy.gov. There is no statewide cadastral aggregation in Indiana comparable to North Carolina's NC OneMap.
Indiana Geographic Information Office (IGIO) coordinates GIS standards and hosts the Indiana Spatial Data Portal, but it does not aggregate county parcel data into a single queryable layer. Each county publishes independently. Hamilton County operates a GeoHub at geohub.hamiltoncounty.in.gov with the HamCoParcelsPublic FeatureServer as the primary parcel endpoint. Allen County runs the acimap.us platform, a joint City of Fort Wayne / Allen County GIS portal. Marion County's parcel data is published through IndyGIS at xmaps.indy.gov, though the public-facing layer exposes only addresses and geometry, not owner names. County auditor deed records are accessible through the Indiana Access to Public Records Act but not through the same GIS portal.
Marion County Indiana (Indianapolis, FIPS 18097) is Indiana's most populous county, but its public parcel REST layer at xmaps.indy.gov exposes 25 fields covering address, geometry, and administrative subdivision data — no owner name or mailing address. The county's owner data lives in the IndyGIS Assessor Property Cards application at maps.indy.gov/AssessorPropertyCards/, which is browser-based with no public REST interface. This is Indiana's Marion County; Oregon's Marion County (FIPS 41047, Salem) is an entirely different jurisdiction that does expose owner names on its public REST layer.
Hamilton County IN's HamCoParcelsPublic layer exposes two owner-name fields: DEEDEDOWNR (the name from the deed instrument) and OWNNAME (the assessor's owner-of-record name). For recently transferred parcels, these can differ: the deed may have recorded but the assessor roll may not yet reflect the new owner. DEEDEDOWNR is generally the more current field for identifying who owns the parcel as of the last deed transfer. The FMTPRCLNO field carries the formatted parcel number (e.g., '10-11-04-00-00-019.000'), which is how the county references parcels in other official records.
The gis.acimap.us server, which hosts Allen County's parcel layer, uses a TLS renegotiation configuration that causes direct curl calls on some Windows clients to time out silently. The layer is accessible via ArcGIS REST client libraries and HTTPS-capable GIS tools that handle renegotiation transparently. The service itself is a lean 11-field layer (PIN, GIS_ID, OwnerofRecord, PropertyAddress1, TransferDate, and a few geometry fields), so response sizes are small once the connection succeeds. The Assessor folder at the same host requires authentication and is not part of the public parcel dataset.
Indianapolis north suburbs (Noblesville, Carmel, Fishers, Westfield; pop. 370,000). This is Indiana's Hamilton County (FIPS 18057), distinct from Ohio's Hamilton County (FIPS 39061, Cincinnati) and Tennessee's Hamilton County (FIPS 47065, Chattanooga). FeatureServer exposes 25+ fields including DEEDEDOWNR, LOCADDRESS, DEEDACRES, and PROPCLASS.
Contains Fort Wayne (pop. 385,000 county). Lean 11-field layer via gis.acimap.us. Fields: PIN, OwnerofRecord, PropertyAddress1, TransferDate. Owner name search confirmed working. Server uses TLS renegotiation; direct curl from Windows may fail silently.
Contains Indianapolis (pop. 975,000 consolidated city-county, FIPS 18097). This is Indiana's Marion County, distinct from Oregon's Marion County (FIPS 41047, Salem). Public REST layer exposes address and geometry only; no owner-name field. Owner lookups require the browser-based Assessor Property Cards at maps.indy.gov/AssessorPropertyCards/.
Hamilton County IN owner query (DEEDEDOWNR): ?where=UPPER(DEEDEDOWNR)+LIKE+UPPER('%25SMITH%25')&outFields=FMTPRCLNO,DEEDEDOWNR,OWNNAME,LOCADDRESS,LOCCITY,PROPCLASS&f=json. Allen County (OwnerofRecord): ?where=UPPER(OwnerofRecord)+LIKE+UPPER('%25SMITH%25')&outFields=PIN,OwnerofRecord,PropertyAddress1,TransferDate&f=json. Marion County address query (no owner field): ?where=UPPER(FULL_STNAME)+LIKE+UPPER('%25MAIN%25')&outFields=PARCEL_TAG,STNUMBER,FULL_STNAME,CITY,ZIPCODE&f=json. Append returnGeometry=false&resultRecordCount=10.
Last updated 2026-05-24.
3 Indiana counties are indexed in the UrbanKit atlas with verified public REST endpoints: Hamilton, Allen, and Marion. Hamilton and Allen expose owner-name search; Marion index by parcel ID and address only.
Hamilton and Allen expose an owner-name field on the public REST layer. Hamilton, for example, uses the DEEDEDOWNR field — a case-insensitive search is ?where=UPPER(DEEDEDOWNR)%20LIKE%20UPPER('%25SMITH%25')&outFields=*&f=json. Marion index by parcel ID and address only, so owner lookups there go through the county assessor or appraiser. Open a county's page here for its full field list and a ready-to-run sample query.
Hamilton publishes parcels at https://gis1.hamiltoncounty.in.gov/arcgis/rest/services/HamCoParcelsPublic/FeatureServer/0 — a FeatureServer (layer 0). It indexes by Formatted Parcel Number, Deeded Owner Name, Owner Name, and Owner Address. Owner-name search: UPPER(DEEDEDOWNR) LIKE UPPER('%25SMITH%25').
Both. Indiana uses a mix: Hamilton publish ArcGIS FeatureServer layers, while Allen and Marion use MapServer. Both support /query, so the same owner, parcel-ID, and address lookups work against either.
Listing missing or moved? Tell us — we verify and update weekly.