Below is a list of Dunellen NJ zip codes. For your research we have also included Dunellen Area Code, Time Zone, UTC and the local Middlesex County FIPS Code. Each Dunellen New Jersey zip code has a center Longitude / Latitude point (the Dunellen center is -74.464996337891 / 40.588401794434). For your convenience we have also indicated if that zip code in Dunellen observes Daylight Savings time.