Below is a list of Flagtown NJ zip codes. For your research we have also included Flagtown Area Code, Time Zone, UTC and the local Somerset County FIPS Code. Each Flagtown New Jersey zip code has a center Longitude / Latitude point (the Flagtown center is -74.683502197266 / 40.50899887085). For your convenience we have also indicated if that zip code in Flagtown observes Daylight Savings time.