Adelphia, NJ is a city located in Monmouth County, New Jersey and has a land area of 0.00 square miles (0.00 km2). The water area for the city is 0.00 square miles or 0.00 km2. There is one unique zip code in Adelphia, New Jersey and it is 07710. The area code(s) for Adelphia is 732/908/848.
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