Oak Bluffs, MA is a city located in Dukes County, Massachusetts and has a land area of 3.24 square miles (8.39 km2). The water area for the city is 3.98 square miles or 10.31 km2. There is one unique zip code in Oak Bluffs, Massachusetts and it is 02557. The area code(s) for Oak Bluffs is 508/774.
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