Below is a list of Saint Tammany County LA zip codes. For your research we have also included Saint Tammany County Area Code, Time Zone, UTC and the local County FIPS Code. Each Saint Tammany County Louisiana zip code has a center Longitude / Latitude point (the Saint Tammany County center is -89.960098266602 / 30.428699493408). For your convenience we have also indicated if that zip code in Saint Tammany County observes Daylight Savings time.