Watertown is located in South Dakota. Watertown, South Dakota has a population of 22,577. Watertown is less family-centric than the surrounding county with 34.18% of the households containing married families with children. The county average for households married with children is 34.68%.
The median household income in Watertown, South Dakota is $56,520. The median household income for the surrounding county is $61,496 compared to the national median of $69,021. The median age of people living in Watertown is 38.2 years.
The average high temperature in July is 82.7 degrees, with an average low temperature in January of 2.3 degrees. The average rainfall is approximately 23.5 inches per year, with 38.4 inches of snow per year.