South Londonderry Township, Pennsylvania

Mount Wilson is an unincorporated community on the border of South Annville Township and South Londonderry Township in Lebanon County, Pennsylvania, United States. Mount Wilson is located along Pennsylvania Route 241.

Colebrook Iron Master's House, also known as the Colebrook Mansion and Colebrook Estate, is a historic home located at South Londonderry Township, Lebanon County, Pennsylvania. It was built between about 1791 and 1796, and is a 2+1⁄2-story, 3-bay wide by 2-bay brownstone residence in a vernacular Georgian style. Also on the property are a contributing spring house, kitchen house, stable, privy, carriage shed, spring trough, and an 18th-century iron fence.It was added to the National Register of Historic Places in 2010.

Colebrook is an unincorporated community in South Londonderry Township in Lebanon County, Pennsylvania, United States. Colebrook is located at the intersection of Pennsylvania Route 117 and Mount Wilson Road just to the south of Pennsylvania Route 241.

South Annville Township is a township in Lebanon County, Pennsylvania, United States. It is part of the Lebanon, Pennsylvania Metropolitan Statistical Area. The population was 3,426 at the 2020 census.

Upper Lawn is an unincorporated community in South Londonderry Township in Lebanon County, Pennsylvania, United States. Upper Lawn is located at the intersection of Pennsylvania Route 341, Lawn Road, and Gingrich Road.

Lawn, previously known as Roseland, is an unincorporated community in South Londonderry Township in Lebanon County, Pennsylvania, United States. Lawn is located at the intersection of Pennsylvania Route 241 and Lawn Road.

Reigle Field (FAA LID: 58N), also known as Reigle Airport, is a privately owned, public use airport located two nautical miles (4 km) south of the central business district of Palmyra, in Lebanon County, Pennsylvania, United States.

Millard Airport (FAA LID: N76) was a public use airport located one nautical mile (2 km) southwest of the central business district of Annville, in Lebanon County, Pennsylvania, United States. It later became a private use airport (FAA LID: 4PA0).

The Palmyra Area School District is the public school system in southwest Lebanon County, Pennsylvania. The district serves the residents of Palmyra Borough, North Londonderry Township, South Londonderry Township, Campbelltown, Lawn, and Mount Gretna. This suburban district encompasses approximately 40 square miles (100 km2). According to 2008 local census data, it serves a resident population of 20,487. By 2010, the District's population increased to 22,399 people. In 2009, the Palmyra Area School District residents’ per capita income was $24,082, while the median family income was $58,016. In the Commonwealth, the median family income was $49,501 and the United States median family income was $49,445, in 2010.Palmyra Area School District consists of: Palmyra Area High School Palmyra Area Middle School Forge Road Elementary School Pine Street Elementary School Northside Elementary School Lingle Avenue Elementary School

Campbelltown is an unincorporated community and census-designated place (CDP) in Lebanon County, Pennsylvania, United States. The population was 3,616 at the 2010 census. It is located east of Hershey at the intersection of U.S. Route 322 and Pennsylvania Route 117 and is located in the Harrisburg metropolitan area.

Timber Hills is an unincorporated community and census-designated place (CDP) in Lebanon County, Pennsylvania, United States. The population was 360 at the 2010 census.

Dr. B. Stauffer House is a historic home located at South Londonderry Township, Lebanon County, Pennsylvania. It was built in 1848, and is a 2+1⁄2-story, 3-bay wide by 4-bay brick residence in a vernacular Georgian style. It has a hipped roof with a flat roofed dormer over the central bay. The house has a connected brick smokehouse and features a two-story verandah. The house once included an apothecary shop.It was added to the National Register of Historic Places in 1979.