Below is a list of West Caldwell NJ zip codes. For your research we have also included West Caldwell Area Code, Time Zone, UTC and the local Essex County FIPS Code. Each West Caldwell New Jersey zip code has a center Longitude / Latitude point (the West Caldwell center is -74.276496887207 / 40.840099334717). For your convenience we have also indicated if that zip code in West Caldwell observes Daylight Savings time.