Marion is located in South Dakota. Marion, South Dakota has a population of 897. Marion is more family-centric than the surrounding county with 40.09% of the households containing married families with children. The county average for households married with children is 35.7%.
The median household income in Marion, South Dakota is $60,357. The median household income for the surrounding county is $66,199 compared to the national median of $69,021. The median age of people living in Marion is 44.4 years.
The average high temperature in July is 84.3 degrees, with an average low temperature in January of 6.7 degrees. The average rainfall is approximately 27.1 inches per year, with 36.1 inches of snow per year.