Castle Rock, South Dakota
Castle Rock is an unincorporated community in Butte County, in the U.S. state of South Dakota.[1]
History
A post office called Castle Rock was established in 1910, and remained in operation until 1972.[2] The community took its name from Castle Rock Butte.[3]
References
- ^ U.S. Geological Survey Geographic Names Information System: Castle Rock, South Dakota
- ^ "Butte County". Jim Forte Postal History. Retrieved 27 January 2015.
- ^ Federal Writers' Project (1940). South Dakota place-names, v.1-3. University of South Dakota. p. 30.