Shiremanstown is a borough in Cumberland County, Pennsylvania, United States. The population was 1,569 at the 2010 census. William Bigler (January 11, 1814 August 9, 1880), who was governor of Pennsylvania from 1852 to 1855, and later a U.S. Senator, was born in Shiremanstown. Shiremanstown is part of the HarrisburgCarlisleMetropolitan Statistical Area.