Ohio Auditor

Union County Auditor Property Search


The Union County Auditor is the Chief Fiscal Officer and the Chief Assessor of the Union County. As the Chief Fiscal Officer, the Auditor is in charge of the financial accounts of every County Board, department, office, agency, or district. It is the duty of the Auditor to ensure that the County Union funds are used lawfully and the taxes revenues are allocated fairly. As the Chief Assessor, the Auditor is responsible for determining the values of all properties for tax purposes within the county. In addition, the Auditor also annually reviews the tax budgets of all taxing districts, hears property valuation complaints, administers tax exemptions, and supervises all County technology decisions.

About the Property Appraisal

According to Ohio Law, the Auditor should make a general reappraisal of real property every six years with an update of property values every three years. There are now approximately 32,800 parcels of properties in Union County. It is the job of the Auditor to fairly and uniformly appraise and assess every parcel of land and the buildings thereon. The last reappraisal in Union County was performed in 2019. The Auditor’s office keeps a detailed record of the appraisal which is open to the public.

Union County Property Search

If you want to search for information about the properties, there is a Property Search Page provided by the Union County Auditor on the website.

Union County Property Search

You can search the properties by single search parameter such as parcel number, property address, and owner name, or by Advanced Search with multiple search parameters.
Enter the search information in the search field (s) and then click the "Search" button.
You will get a wealth of information about the property, including general information, land details, building details, value history, sales history, tax charges and payments, current tax rates, map, sketch, Property Record Card, etc.

Contact the Union County Auditor

Address: 233 West 6th Street, 2nd Floor, Marysville, OH 43040
Phone: 937-645-3003
Fax: 937-645-3057
Email: auditor@unioncountyohio.gov
Hours: 8:30 AM to 4:00 PM (Closed from 8:30 AM to 10:00 AM on the third Tuesday of each month)

County Auditor