Duncan is located in South Carolina. Duncan, South Carolina has a population of 3,937. Duncan is less family-centric than the surrounding county with 24.77% of the households containing married families with children. The county average for households married with children is 29.91%.
The median household income in Duncan, South Carolina is $52,979. The median household income for the surrounding county is $57,627 compared to the national median of $69,021. The median age of people living in Duncan is 30.5 years.
The average high temperature in July is 90.7 degrees, with an average low temperature in January of 29.1 degrees. The average rainfall is approximately 48.4 inches per year, with 2.3 inches of snow per year.
