Tiffin, Ohio - Wikipedia, the free encyclopediaTiffin is a city in and the county seat of Seneca County, Ohio, United States The population was 18,135 at the 2000 census. The National Arbor Day Foundation has …
Tiffin University | Tiffin, Ohio Visitors GuideTiffin, Ohio Tiffin History. Tiffin is named after Edward Tiffin, the first governor of Ohio, and grew up around the original Fort Ball site.