Duncannon, Pennsylvania
Duncannon is a borough in Perry County, Pennsylvania, United States. The population was 1,522 at the 2010 census. It is part of the Harrisburg–Carlisle Metropolitan Statistical Area. The center of population of Pennsylvania is located in Duncannon. Lightning Guider sleds were manufactured in Duncannon from 1904 until 1988. The Appalachian Trail makes its way through the town, going on various streets, and runs mainly along North High Street. It comes... Show more off the mountain at 40.3813, -77.0292 lat/long, onto Inn Road.