Jefferson Real EstateJefferson is located in South Dakota. Jefferson, South Dakota has a population of 622. Jefferson is more family-centric than the surrounding county with 39.1% of the households containing married families with children. The county average for households married with children is 33.88%. The median household income in Jefferson, South Dakota is $54,583. The median household income for the surrounding county is $65,434 compared to the national median of $57,652. The median age of people living in Jefferson is 37.6 years. Jefferson WeatherThe average high temperature in July is 85.2 degrees, with an average low temperature in January of 9 degrees. The average rainfall is approximately 28.8 inches per year, with 32.1 inches of snow per year. Jefferson MapReal estate near JeffersonNearby CitiesNearby Cities Homes for Sale |