Woonsocket, SD is a city located in Sanborn County, South Dakota and has a land area of 235.03 square miles (608.73 km2). The water area for the city is 1.35 square miles or 3.50 km2. There is one unique zip code in Woonsocket, South Dakota and it is 57385. The area code(s) for Woonsocket is 605.
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