Lancaster (locally /ˈlæŋk(ə)stər/ LANG-kəs-tər, LANK-stər) is a city in Fairfield County, Ohio, in the south central part of the state. As of the 2010 census, the city population was 38,780. The city is located near the Hocking River, approximately 33 miles (53 km) southeast of Columbus, 23 miles west of New Lexington, and is the county seat of Fairfield County.
Geography
Lancaster is located at 39°43′N 82°36′W (39.7193, -82.6053). According to the United States Census Bureau, the city has a total area of 18.90 square miles (48.95 km2), of which 18.84 square miles (48.80 km2) is land and 0.06 square miles (0.16 km2) is water.