Official Website for the Seneca County Auditor's Office

Welcome to the Seneca County Auditor's Website! 


Use the search bar, advanced search, or map to look up any property in the county to view its tax appraisal and payment history.

Forms, information pages, sales reports and the conveyance calculator are available on the links at the top right hand corner of the page.

The Tax Estimator will calculate your annual property tax amounts based on current tax rates and a property valuation you specify. Click HERE to get started!

To view a short video about the role of appraisers, please click HERE.


The Standards for All Instruments of Conveyance have been revised by the Seneca County Auditor and Engineer.  Public Hearings will be held regarding the updates in the RTA Basement Conference Room on Thursday, May 18, 2023 at 9:00 am to 10:00 am, and Thursday, June 1, 2023 at 2:00 pm to 3:00 pm.

Contact Us

109 S. Washington St

Suite 2206

Tiffin, OH 44883

Phone: (419) 447-0692

Fax: (419) 448-5055

Mon-Fri, 8:30AM-4:30PM

Email the Auditor

Population: 55,069

Parcels: 35,539


Veterans Exemption

With passage of House Bill 59, the State Biennium Budget Bill (ORC 5709.17), a tax exemption was created for real property held or occupied by veterans or fraternal organizations. Read more about the new Veterans' Exemption. 

Dog Tags

Got Tags? Click HERE to register.

 Congratulations to   Aaron and his dog,   Reese, winners of the   2023 #1 Seneca   County dog license!