Union County, OH: GIS map
The official interactive GIS map for Union County. Open it to search a property and see its parcel and the other map layers the county publishes.
Union County GIS map Open PublicGIS map
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What you can look up here
- County GIS mapThe interactive map the county publishes. Parcels, aerial photos, roads, and lakes in one place.
About this resource
- Provided by
- Union County (official)
- Covers
- Union County, OH
- Link status
- Opened normally at the last check
- Link checked
- Oct 16, 2026
- Web address
- https://www7.co.union.oh.us/unionoh
Who to contact
- Union County GISUnion County Auditor keeps the maps and GIS for Union County.
- Phone
- 937-645-3003
- auditor@unioncountyohio.gov
- Website
- Visit website
More for Union County, OH
- Union County parcel map and property searchProperty records · Property owner
- Union County property tax search and paymentProperty taxes
- Union County zoning and land useZoning
- NRCS wetland determinations and conservation complianceWetlands
- Union County floodplain and flood zonesFlood zones
- Union County plats and subdivision mapsPlats
- USGS map of public and protected landPublic land
- Ohio food assistanceFood assistance (SNAP and EBT)
- Union County RecorderProperty records · Deeds and land records · Plats
- Union County TreasurerProperty taxes
- Union County Auditor tax saleTax-forfeited land
- Union Soil & Water Conservation DistrictEnvironmental conditions