Below is a list of Pennington NJ zip codes. For your research we have also included Pennington Area Code, Time Zone, UTC and the local Mercer County FIPS Code. Each Pennington New Jersey zip code has a center Longitude / Latitude point (the Pennington center is -74.79109954834 / 40.328098297119). For your convenience we have also indicated if that zip code in Pennington observes Daylight Savings time.