Hammer, South Dakota


A post office called Hammer was established in 1915, and remained in operation until 1973.[2] The community was named after Gunder and Iver Hammer, the original owners of the town site.[3]


  1. U.S. Geological Survey Geographic Names Information System: Hammer, South Dakota
  2. "Roberts County". Jim Forte Postal History. Retrieved 30 January 2015.
  3. Federal Writers' Project (1940). South Dakota place-names, v.1-3. University of South Dakota. p. 40.

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