Slippery Rock, Pennsylvania
The post office for Slippery Rock Township was established in 1826 in the Ginger Hill area.The town of Ginger Hill was incorporated as a borough under the name Centreville in 1841, later changing its name to Slippery Rock in 1896.[7] According to the United States Census Bureau, the borough has a total area of 1.7 square miles (4.3 km2), all land.The terrain around Slippery Rock is hilly, and the strip mining of coal has been a prominent commercial activity in the surrounding area, which is largely agricultural.PA 258 (North Main Street) leads northwest 7.7 miles (12.4 km) to I-79.