Below is a list of Hopewell NJ zip codes. For your research we have also included Hopewell Area Code, Time Zone, UTC and the local Mercer County FIPS Code. Each Hopewell New Jersey zip code has a center Longitude / Latitude point (the Hopewell center is -74.765197753906 / 40.387500762939). For your convenience we have also indicated if that zip code in Hopewell observes Daylight Savings time.