Lake Madison is located in South Dakota. Lake Madison, South Dakota has a population of 856. Lake Madison is less family-centric than the surrounding county with 17.48% of the households containing married families with children. The county average for households married with children is 26.24%.
The median household income in Lake Madison, South Dakota is $102,222. The median household income for the surrounding county is $67,297 compared to the national median of $69,021. The median age of people living in Lake Madison is 60.9 years.
The average high temperature in July is 83.5 degrees, with an average low temperature in January of 5.5 degrees. The average rainfall is approximately 26.5 inches per year, with 38.9 inches of snow per year.
