Castlewood is located in South Dakota. Castlewood, South Dakota has a population of 680. Castlewood is less family-centric than the surrounding county with 38.01% of the households containing married families with children. The county average for households married with children is 41.62%.
The median household income in Castlewood, South Dakota is $69,844. The median household income for the surrounding county is $71,923 compared to the national median of $69,021. The median age of people living in Castlewood is 34 years.
The average high temperature in July is 82.6 degrees, with an average low temperature in January of 2.1 degrees. The average rainfall is approximately 24.7 inches per year, with 38.2 inches of snow per year.
