 According to the United States Census Bureau, the township has a total area of 48.9 square miles (126.6 km²), of which, 48.8 square miles (126.5 km²) of it is land and 0.04 square miles (0.1 km²) of it (0.06%) is water.Shippen Township is bordered by Chatham Township to the north and east and Delmar Township to the east and south.Elk Township borders the southwest corner.