Below is a list of Adelphia NJ zip codes. For your research we have also included Adelphia Area Code, Time Zone, UTC and the local Monmouth County FIPS Code. Each Adelphia New Jersey zip code has a center Longitude / Latitude point (the Adelphia center is -74.261497497559 / 40.22029876709). For your convenience we have also indicated if that zip code in Adelphia observes Daylight Savings time.