Sylvan Lake is located in South Dakota. Sylvan Lake, South Dakota has a population of 1,062.
The median household income in Sylvan Lake, South Dakota is $48,581. The median household income for the surrounding county is $56,449 compared to the national median of $57,652. The median age of people living in Sylvan Lake is 54.5 years.
The average high temperature in July is 79.3 degrees, with an average low temperature in January of 13.4 degrees. The average rainfall is approximately 19.4 inches per year, with 55.9 inches of snow per year.
