Below is a list of Mountain Lakes NJ zip codes. For your research we have also included Mountain Lakes Area Code, Time Zone, UTC and the local Morris County FIPS Code. Each Mountain Lakes New Jersey zip code has a center Longitude / Latitude point (the Mountain Lakes center is -74.442100524902 / 40.891498565674). For your convenience we have also indicated if that zip code in Mountain Lakes observes Daylight Savings time.