Labadieville is a census-designated place (CDP) in Assumption Parish, Louisiana, United States. The population was 1,811 at the 2000 census. It is part of the Pierre Part Micropolitan Statistical Area.
Labadieville, originally called "Brulee Labadie", takes its name from a French pioneer and resident, Jean Louis LaBadie. In 1721, there were some fifty warriors of the Chitimacha tribe. During the two decades after 1750, the area around Labadieville was taken up by French and Spanish, joined by Acadians, Islenos and a sprinkling of Germans from the Cote des Allemands or German Coast to the east on the Mississippi River.
In 1843, a mission was established. St. Philomena Catholic church dates from 1848 as an organized parish and the first mass was said in the home of Widow Zacharie Boudreaux. The first building was occupied in 1847.