Lennox 57039 Real EstateLennox is located in South Dakota. Lennox, South Dakota 57039has a population of 2,190. Lennox 57039 is less family-centric than the surrounding county with 34.72% of the households containing married families with children. The county average for households married with children is 42.49%. The median household income in Lennox, South Dakota 57039 is $49,102. The median household income for the surrounding county is $81,849 compared to the national median of $57,652. The median age of people living in Lennox 57039 is 40.9 years. Lennox WeatherThe average high temperature in July is 83.9 degrees, with an average low temperature in January of 6.8 degrees. The average rainfall is approximately 27.2 inches per year, with 30.1 inches of snow per year. Lennox MapReal estate near LennoxNearby CitiesNearby Cities Homes for Sale |