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!

2023 Revaluation

The 2023 Revaluation of Real Estate has been completed, and the new estimated market values are now available for your review.  

The following are brief information videos that help to explain the process.

  • To view a short video about the Role of Appraisers, please click HERE.
  • To learn about Property Tax Calculation, please click HERE.
  • For information about the Board of Revision process, please click HERE.

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 Lenna and her dog, Fred, winners of the 2024 #1 Seneca County dog license!