Sharpsburg is a borough in Allegheny County, Pennsylvania, 5mi northeast of downtown Pittsburgh, along the Allegheny River. In the past, it had a rolling mill, foundries, machine shops, and manufacturers of varnish, brick, glass, lumber products, wire, hair, felt, and lubricating oil. In 1900, 6,842 people lived here; by 1940, 8,202 people lived in Sharpsburg. The population was 3,446 at the 2010 census.The H. J. Heinz Company originated in Sharpsburg.GeographySharpsburg is located at .According to the United States Census Bureau, the borough has a total area of, of which is land and, or 26.15%, is water.Surrounding and adjacent neighborhoodsSharpsburg has five land borders, including Etna to the west, Shaler Township to the northwest, two of the five non-contiguous areas of O'Hara Township to the north and southeast, and Aspinwall to the east. To the south, across the Allegheny River via 62nd Street Bridge, are the Pittsburgh neighborhoods of Upper Lawrenceville and Morningside.
