Below is a list of Readington NJ zip codes. For your research we have also included Readington Area Code, Time Zone, UTC and the local Hunterdon County FIPS Code. Each Readington New Jersey zip code has a center Longitude / Latitude point (the Readington center is -74.737998962402 / 40.568698883057). For your convenience we have also indicated if that zip code in Readington observes Daylight Savings time.