South Londonderry Twp Adm 20 W Market St Campbelltown, PA 17010 Phone : (717) 838-5556 South Londonderry Twp Adm Business Category Government Offices-City Village & Twp Legislative Bodies South Londonderry Township--administration W Market & Center Sts Campbelltown, PA 17010 Phone : (717) 838-5556 South Londonderry Township--administration Business Category Government Offices-City Village & Twp Government Offices State & Local Government Offices & Public Schools