Below is a list of Randolph NJ zip codes. For your research we have also included Randolph Area Code, Time Zone, UTC and the local Morris County FIPS Code. Each Randolph New Jersey zip code has a center Longitude / Latitude point (the Randolph center is -74.57080078125 / 40.841201782227). For your convenience we have also indicated if that zip code in Randolph observes Daylight Savings time.