Below is a list of Duplessis LA zip codes. For your research we have also included Duplessis Area Code, Time Zone, UTC and the local Ascension County FIPS Code. Each Duplessis Louisiana zip code has a center Longitude / Latitude point (the Duplessis center is -90.939796447754 / 30.267400741577). For your convenience we have also indicated if that zip code in Duplessis observes Daylight Savings time.