Arpan is located in South Dakota. Arpan, South Dakota has a population of 93.
The median household income in Arpan, South Dakota is $26,344. The median household income for the surrounding county is $48,941 compared to the national median of $69,021. The median age of people living in Arpan is 63.3 years.
The average high temperature in July is 87 degrees, with an average low temperature in January of 12 degrees. The average rainfall is approximately 17.5 inches per year, with 35.5 inches of snow per year.