South Amboy, NJ is a city located in Middlesex County, New Jersey and has a land area of 7.08 square miles (18.34 km2). The water area for the city is 0.51 square miles or 1.32 km2. There is one unique zip code in South Amboy, New Jersey and it is 08879. The area code(s) for South Amboy is 732.
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