what county is fostoria oh in
Fostoria, OH. Sponsored Topics. Fostoria is a city located at the convergence of Hancock, Seneca, and Wood counties in the northwestern part of the U.S. state of Ohio. It is approximately 40 miles (64 km) south of Toledo and 90 miles (140 km) north of Columbus. The population was 13,931 at the 2000 census.