Glencross, SD is a city located in Dewey County, South Dakota and has a land area of 109.98 square miles (284.85 km2). The water area for the city is 0.16 square miles or 0.41 km2. There is one unique zip code in Glencross, South Dakota and it is 57630. The area code(s) for Glencross is 605.
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