Ville Platte is the largest city in, and the parish seat of, Evangeline Parish, Louisiana, United States. The population was 6,303 at the 2020 cens…Ville Platte is the largest city in, and the parish seat of, Evangeline Parish, Louisiana, United States. The population was 6,303 at the 2020 census, down from 8,145 in 2000. The city's name is of French origin, roughly translating to "flat town", in reference to its relatively flat topography in contrast to the more hilly terrain north of the area.