Erwin is located in South Dakota. Erwin, South Dakota has a population of 34. Erwin 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 28.13%.
The median household income in Erwin, South Dakota is $31,875. The median household income for the surrounding county is $58,794 compared to the national median of $57,652. The median age of people living in Erwin is 65.6 years.
The average high temperature in July is 82.9 degrees, with an average low temperature in January of 5.7 degrees. The average rainfall is approximately 25.5 inches per year, with 40.2 inches of snow per year.
