Sullivans Island is located in South Carolina. Sullivans Island, South Carolina has a population of 1,834. Sullivans Island is more family-centric than the surrounding county with 27% households with children. The county percentage for households with children is 23%.
The median household income in Sullivans Island, South Carolina is $145,652. The median household income for the surrounding county is $70,500 compared to the national median of $66,222. The median age of people living in Sullivans Island is 49.7 years.
The average high temperature in July is 88.5 degrees, with an average low temperature in January of 37.5 degrees. The annual precipitation is 49.38.