Whitehorse, SD is a city located in Dewey County, South Dakota and has a land area of 28.09 square miles (72.75 km2). The water area for the city is 0.19 square miles or 0.49 km2. There is one unique zip code in Whitehorse, South Dakota and it is 57661. The area code(s) for Whitehorse is 605.
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