Madisonville, LA is a city located in Saint Tammany County, Louisiana and has a land area of 30.96 square miles (80.19 km2). The water area for the city is 2.42 square miles or 6.27 km2. There is one unique zip code in Madisonville, Louisiana and it is 70447. The area code(s) for Madisonville is 985.
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