Yaphank, NY is a city located in Suffolk County, New York and has a land area of 12.03 square miles (31.16 km2). The water area for the city is 0.11 square miles or 0.28 km2. There is one unique zip code in Yaphank, New York and it is 11980. The area code(s) for Yaphank is 631/934.
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