 The population of Lower Saucon Township was 9,884 at the 2000 census.All locations in the township have addresses in nearby Hellertown or Bethlehem.According to the United States Census Bureau, the township has a total area of 24.3 square miles (62.9 km2), of which, 24.1 square miles (62.5 km2) of it is land and 0.2 square miles (0.4 km2) of it (0.62%) is water.