Lancaster (local pronunciation or even ) is a city in
Fairfield County,
Ohio,
United States. As of the
2010 census, the city population was 38,780. It is located near the
Hocking River, approximately southeast of
Columbus and is the
county seat of Fairfield County. The current mayor of Lancaster is
Republican David S. Smith, who took office in January 2004. In November 2011, Smith won reelection to a third four-year term ending December 31, 2015.