Hampden Township is the largest municipality by population in Cumberland County, Pennsylvania, United States. The population was 28,044 at the 2010 census, up from 24,135 at the 2000 census.HistoryThe Johannes Eberly House was added to the National Register of Historic Places in 1973.GeographyHampden Township is located in northeastern Cumberland County, drained by Conodoguinet Creek, which makes several large bends across the middle of the township on its way east towards the Susquehanna River. Blue Mountain separates the township in the north from Perry County. Its villages include Brennemans Mill, Good Hope, Mount Zion, and Sporting Hill.Interstate 81 crosses the northern part of the township, with access from Exit 61 (Pennsylvania Route 944) at Mount Zion. Pennsylvania Route 581, the southwestern segment of Harrisburg's Capital Beltway, interchanges with I-81 in the west and runs south then east across the township, with access from Exit 2 (Creekview Road), Exit 3 (Carlisle Pike/U.S. Route 11), and Exit 4 (Pennsylvania Route 641).