Auditor
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General Information
Staff Directory
Email
auditor@unioncountyohio.gov
Phone Numbers
937-645-3003
Fax: 937-645-3057
Emergencies: Dial 911
Location
233 West 6th Street
2nd Floor
Marysville,
OH
43040
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Hours
Office Hours
8:30 a.m. - 4 p.m.
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ATTENTION: Title Companies, Title Examiners, Attorneys and Closing Agents. The Union County Auditor’s Office will be implementing new procedures for splits, condominiums, subdivisions, combinations, and plats created in 2021 and in future years. CLICK HERE for further details.

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

GIS Map

Please direct map or GIS related questions to: maps@unioncountyohio.gov 

Parcel Search

Subdivision Plat Search

Union County Web Portal & Download Center

Current & Historical Map Collections