what parish is madisonville la in
Sponsored Topics. Madisonville is a town in St. Tammany Parish, Louisiana, United States. The population was 677 at the 2000 census. It is part of the New OrleansâMetairieâKenner Metropolitan Statistical Area. Madisonville is located at 30Â°24â²26â³N 90Â°9â²42â³W / 30.40722Â°N 90.16167Â°W / 30.40722; -90.16167 (30.407179, -90.161716).