Below is a list of Stillwater NJ zip codes. For your research we have also included Stillwater Area Code, Time Zone, UTC and the local Sussex County FIPS Code. Each Stillwater New Jersey zip code has a center Longitude / Latitude point (the Stillwater center is -74.878303527832 / 41.036201477051). For your convenience we have also indicated if that zip code in Stillwater observes Daylight Savings time.