​NEW PHILADELPHIA, a city of Ohio, the county-seat of Tuscarawas co., 96 miles S. of Cleveland, on the Tuscarawas river, the Ohio canal, and the Baltimore and Ohio and the Pennsylvania railroads. It is an important mining center and has manufactories of steel, sewer pipe, flour, brick, etc. The city contains a park, a public library, several institutions and a court house. Pop. (1910) 8,542; (1920) 10,718.