Johns Island is located in South Carolina. Johns Island, South Carolina 29455has a population of 21,990. Johns Island 29455 is less family-centric than the surrounding county with 22.29% of the households containing married families with children. The county average for households married with children is 26.66%.
The median household income in Johns Island, South Carolina 29455 is $73,923. The median household income for the surrounding county is $57,882 compared to the national median of $57,652. The median age of people living in Johns Island 29455 is 48.2 years.
The average high temperature in July is 87.6 degrees, with an average low temperature in January of 42.8 degrees. The average rainfall is approximately 49.1 inches per year, with 0 inches of snow per year.
