Garretson is a city in Minnehaha County, South Dakota, United States.

[7] As of the census[9] of 2010, there were 1,166 people, 449 households, and 308 families living in the city.

There were 476 housing units at an average density of 328.3 per square mile (126.8/km2).

26.9% of all households were made up of individuals, and 12.9% had someone living alone who was 65 years of age or older.

There were 458 housing units at an average density of 309.4 per square mile (119.5/km2).

24.4% of all households were made up of individuals, and 13.1% had someone living alone who was 65 years of age or older.

Garretson is home to Devil's Gulch, the site where Jesse James allegedly escaped a posse after robbing the First National Bank in Northfield, Minnesota, and Split rock park, the site of the cities bathhouse from the founding.