No public parcel REST endpoint we can serve for Montgomery County.
Montgomery County's Auditor publishes parcels with owner names, but every field on that layer has a dotted join name our registry can't accept yet, so we don't index it. Search the Auditor's GIS maps, or request it and we'll tell you if that changes.
Checked 2026-10-17. Request it below and we’ll tell you if that changes.
No public REST parcel layer that the atlas can register was found for Montgomery County, Ohio (county seat Dayton; FIPS 39113) as of 2026-10-17. The county Auditor does publish parcels with owners on gis.mcohio.org: VantagePoints/AUDGIS_B1 MapServer layer 7 ('Parcels') holds 273,351 parcels inside the county (extent about 84.49 to 84.05 W, 39.58 to 39.92 N) joined to the Auditor's CAMA table, with an owner name on 246,832 rows, a situs address on 246,790 and owner mailing state OH on 231,847, and the server echoes a browser Origin back. Every column on that layer carries a qualified join name (SDE.mc_parcel_polygon.TAXPINNO, SDE.WEB_CAMA.OWNER_NAME1, SDE.WEB_CAMA.PARLOC) and the server refuses unqualified names in outFields, while the registry accepts field names made of letters, digits and underscores only, so the layer is not registered until that rule allows a dotted name. The CAMA table alone is layer 15 and has no geometry, and an unjoined copy of the parcel polygons (TestData/mc_parcel_polygon) carries the parcel number and site address but no owner. The Auditor's GIS disclaimer (mcohio.org/630/Disclaimer) disclaims warranty and liability and does not restrict use. Until 2026-10-17 this record pointed at services6.arcgis.com Montgomery_County_Parcels, which is Montgomery County, New York: 25,336 parcels around 42.77 to 43.05 N, 74.08 to 74.76 W, with mailing state NY on 24,247 rows.
Montgomery County Auditor GIS, https://www.mcohio.org/629/GIS
Montgomery County does not yet have a verified public REST endpoint in our atlas. The sections below cover patterns common to most county parcel APIs.
/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 Montgomery County actually publishes, not what you might expect from a national standard (there isn't one).
For background, see What is an APN?
Not in our atlas yet. Montgomery County either runs a token-gated server or a viewer-only portal. If you know a public ArcGIS REST URL for it, add it to the request form above and we'll check it.