South Dennis is located in Massachusetts. South Dennis, Massachusetts has a population of 3,259. South Dennis is more family-centric than the surrounding county with 22.41% of the households containing married families with children. The county average for households married with children is 19.97%.
The median household income in South Dennis, Massachusetts is $73,485. The median household income for the surrounding county is $82,619 compared to the national median of $69,021. The median age of people living in South Dennis is 50.5 years.
The average high temperature in July is 78.9 degrees, with an average low temperature in January of 22.6 degrees. The average rainfall is approximately 46.3 inches per year, with 25.7 inches of snow per year.
