Fostoria is an unincorporated village located in the U.S. state of Michigan. It is within Tuscola County in the Watertown Township. It has a total area of 3.861 square miles at 43°15′12″N 83°22′19″W. The elevation is 853 feet above sea level. As of the 2010 census data, it had a total population of 694. The population density was 180/sq mi. Estimated per capita income in 2016 was $23,801. Recent job growth is positively increased by 0.34 percent. The average travel time is 57 minutes. It has Zip code 48435.