Sullivans Island, SC is a city located in Charleston County, South Carolina and has a land area of 2.50 square miles (6.47 km2). The water area for the city is 0.87 square miles or 2.25 km2. There is one unique zip code in Sullivans Island, South Carolina and it is 29482. The area code(s) for Sullivans Island is 843.
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