Below is a list of Changewater NJ zip codes. For your research we have also included Changewater Area Code, Time Zone, UTC and the local Warren County FIPS Code. Each Changewater New Jersey zip code has a center Longitude / Latitude point (the Changewater center is -74.940902709961 / 40.738399505615). For your convenience we have also indicated if that zip code in Changewater observes Daylight Savings time.