South Dartmouth is located in Massachusetts. South Dartmouth, Massachusetts has a population of 11,316. South Dartmouth is less family-centric than the surrounding county with 19.82% of the households containing married families with children. The county average for households married with children is 28.83%.
The median household income in South Dartmouth, Massachusetts is $70,828. The median household income for the surrounding county is $62,514 compared to the national median of $57,652. The median age of people living in South Dartmouth is 51.5 years.
The average high temperature in July is 82.6 degrees, with an average low temperature in January of 21.5 degrees. The average rainfall is approximately 49.3 inches per year, with 33.2 inches of snow per year.