Rockhill or Rockhill Furnace is a borough in Huntingdon County, Pennsylvania, United States. The population was 371 at the 2010 census, down from 414 at the 2000 census. It is the site of the East Broad Top Railroad and the Rockhill Trolley Museum.

Huntingdon County is a county in the Commonwealth of Pennsylvania. As of the 2020 census, the population was 44,092. Its county seat is Huntingdon. The county was created on September 20, 1787, mainly from the northern part of Bedford County, plus an addition of territory on the east from Cumberland County. The county is part of the Southwest Pennsylvania region of the state.