Piscataway, NJ is a city located in Middlesex County, New Jersey and has a land area of 18.93 square miles (49.03 km2). The water area for the city is 0.17 square miles or 0.44 km2. There are 2 total unique zip codes in Piscataway, New Jersey. The area code(s) for Piscataway is 732.
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