Below is a list of Madisonville LA zip codes. For your research we have also included Madisonville Area Code, Time Zone, UTC and the local Saint Tammany County FIPS Code. Each Madisonville Louisiana zip code has a center Longitude / Latitude point (the Madisonville center is -90.159400939941 / 30.404499053955). For your convenience we have also indicated if that zip code in Madisonville observes Daylight Savings time.