Interior is located in South Dakota. Interior, South Dakota has a population of 25. Interior is less family-centric than the surrounding county with 0% of the households containing married families with children. The county average for households married with children is 21.03%.
The median household income for the surrounding county is $25,357 compared to the national median of $69,021. The median age of people living in Interior is 54.9 years.
The average high temperature in July is 90 degrees, with an average low temperature in January of 12.9 degrees. The average rainfall is approximately 18.4 inches per year, with 33.2 inches of snow per year.