East Hanover Township, Dauphin County, Pennsylvania  East Hanover Township is a township in Dauphin County, Pennsylvania, United States. The population was 5,718 at the 2010 census. The township traces its roots to the founding of the Hanover (Presbyterian) church in 1735. Hanover parish broke off of the Derry parish (modern day Hershey) to serve settlers north of the Swatara creek. The original church is gone, but the cemetery remains between the village of Grantville and the base of the blue mountain. Hanover Township was later divided into East Hanover, West Hanover, and South Hanover townships. When Lebanon County was formed in 1813, East Hanover Township was partitioned to form East Hanover Township, Lebanon County. The John Todd House was added to the National Register of Historic Places in 1988. East Hanover Township is in eastern Dauphin County, with its eastern border following the Lebanon County line. According to the United States Census Bureau, the township has a total area of , of which , or 0.05%, is water. The unincorporated community of Grantville is near the eastern border of the township and is the primary mailing address. Shellsville is located southwest of Grantville and south of the geographic center of the township. Interstate 81 crosses the township from east to west, with access from Exit 80 (Grantville). U.S. Route 22 (Allentown Boulevard) is a four-lane divided highway that runs south of and parallel to I-81. The Ridge-and-Valley Appalachians occupy the northern half of the township. From south to north, the parallel ridges that cross the township are Blue Mountain, Second Mountain, Sharp Mountain, and Stony Mountain, which forms the northern border of the township. The Appalachian Trail crosses the northern part of the township, crossing Stony Mountain and following Sharp Mountain. As of the census of 2000, there were 5,322 people, 1,966 households, and 1,527 families residing in the township. The population density was 133.4 people per square mile (51.5/km²). There were 2,043 housing units at an average density of 51.2/sq mi (19.8/km²). The racial makeup of the township was 96.96% White, 0.71% African American, 0.13% Native American, 0.41% Asian, 0.70% from other races, and 1.09% from two or more races.