Below is a list of Sewaren NJ zip codes. For your research we have also included Sewaren Area Code, Time Zone, UTC and the local Middlesex County FIPS Code. Each Sewaren New Jersey zip code has a center Longitude / Latitude point (the Sewaren center is -74.258796691895 / 40.552101135254). For your convenience we have also indicated if that zip code in Sewaren observes Daylight Savings time.