Below is a list of Mount Arlington NJ zip codes. For your research we have also included Mount Arlington Area Code, Time Zone, UTC and the local Morris County FIPS Code. Each Mount Arlington New Jersey zip code has a center Longitude / Latitude point (the Mount Arlington center is -74.63639831543 / 40.918300628662). For your convenience we have also indicated if that zip code in Mount Arlington observes Daylight Savings time.