Ohio Auditor

Union County Property Tax


The property taxes are calculated by multiplying the assessed value by the total tax rate. The assessed value is 35% of the market value which is established by the Auditor. Then this gross tax is multiplied by the district reduction factor to get the reduction credit. The net amount of taxes is gotten by deducting the reduction credit from the gross tax.

Tax bills are normally mailed out by the County Treasurer in January and June each year. If you do not receive your tax bill, please contact the Treasurer’s office immediately.

The first half of the property taxes is normally due in mid-February and the second half is due in mid-July. Late payments will charge a penalty of 10% of the unpaid current taxes. For payments received within 10 days of the due date, the penalty is lowered to 5%.

How to Pay the Property Taxes?

You have various options to pay your property taxes described as follows.

Pay Online: You can make an online payment on the Bill Pay website.

Pay Your Bill Online

Please note that a convenience fee will be charged.

Pay in Person: You can pay your taxes at the Treasurer's Office. There is also an additional location: Richwood Banking Company, 28 North Franklin Street, Richwood.

Pay by Drop Box: A drop box is located at the back of the Treasurer’s building for you to make a payment.

Pay by Mail: Please mail your payment with an acceptable postmark to the mailing address: 233 West 6th Street, Marysville, OH 43040.

If you want to pay your taxes on a monthly basis, you can apply for the Real Estate Tax Escrow Program. For more details about the program, please visit the Real Estate Tax Escrow Programs page.

Contact the Union County Treasurer

Address: 233 West Sixth Street, 2nd Floor, Marysville, OH 43040
Phone: 937-645-3035
Fax: 937-645-3094
Hours: 8:30 AM - 4:00 PM, Monday to Friday

County Auditor