Below is a list of Port Neches TX zip codes. For your research we have also included Port Neches Area Code, Time Zone, UTC and the local Jefferson County FIPS Code. Each Port Neches Texas zip code has a center Longitude / Latitude point (the Port Neches center is -93.962699890137 / 29.980100631714). For your convenience we have also indicated if that zip code in Port Neches observes Daylight Savings time.