​SHARPSBURG, a borough of Allegheny county, Pennsylvania, U.S.A., on the Allegheny river, opposite the N.E. part of Pittsburg. Pop. (1900) 6842 (1280 foreign-born); (1910) 8153. Sharpsburg is served by the Pennsylvania and the Baltimore & Ohio railways. Coal is mined in the vicinity. Among the manufactures are iron pipes, truck and bar iron, wire, stoves, paint and lubricating oil. Sharpsburg was settled in 1826, was named in honour of James Sharp, the original proprietor, and was incorporated in 1841.