Below is a list of Saint Martin County LA zip codes. For your research we have also included Saint Martin County Area Code, Time Zone, UTC and the local County FIPS Code. Each Saint Martin County Louisiana zip code has a center Longitude / Latitude point (the Saint Martin County center is -91.870903015137 / 30.21430015564). For your convenience we have also indicated if that zip code in Saint Martin County observes Daylight Savings time.