Below is a list of Spotswood NJ zip codes. For your research we have also included Spotswood Area Code, Time Zone, UTC and the local Middlesex County FIPS Code. Each Spotswood New Jersey zip code has a center Longitude / Latitude point (the Spotswood center is -74.390296936035 / 40.3916015625). For your convenience we have also indicated if that zip code in Spotswood observes Daylight Savings time.