Lemmon, SD is a city located in Perkins County, South Dakota and has a land area of 1,012.38 square miles (2.59 km2). The water area for the city is 10.42 square miles or 26.99 km2. There is one unique zip code in Lemmon, South Dakota and it is 57638. The area code(s) for Lemmon is 605.
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