Below is a list of Mount Olive NJ zip codes. For your research we have also included Mount Olive Area Code, Time Zone, UTC and the local Morris County FIPS Code. Each Mount Olive New Jersey zip code has a center Longitude / Latitude point (the Mount Olive center is -74.751800537109 / 40.886600494385). For your convenience we have also indicated if that zip code in Mount Olive observes Daylight Savings time.