Union County, Ohio

Property Search Tools

NOTICE: In response to the COVID-19 situation, the Auditor's Office will continue to provide public services to the best of our ability. Being mindful of public health concerns, effective March 19, 2020, our offices will be CLOSED to the public. For those who need to conduct title work/land transfers, a drop-off/pick-up area is available in the building.  Please CLICK HERE For further details regarding our Office changes.

Please Click on one of the Image Links below to go to the desired web application.

Union County GIS Map


NOTICE: Internet Explorer browser and Microsoft Windows 7 Problems - CLICK HERE for details. Please send your feedback or map questions to: maps@co.union.oh.us

Parcel Search


Subdivision Plat Search


Union County Web Portal


Historical Map Collections