 South Strabane Township has nine borders, including North Strabane Township to the north, Somerset Township to the east, North Bethlehem Township to the southeast, Amwell to the south, North Franklin Township to the southwest, Washington and East Washington to the west, and Canton and Chartiers Townships to the northwest.As of the census of 2000, there were 7,987 people, 3,320 households, and 2,227 families residing in the township.The population density was 345.7 people per square mile (133.5/km²).