Vermilion Parish is a parish located in the U.S. state of Louisiana, created in 1844. The parish seat is Abbeville. Vermilion Parish is part of the Lafayette metropolitan statistical area, and located in southern Acadiana. At the 2020 U.S. census, the population was 57,359.

Abbeville is a city in, and the parish seat of, Vermilion Parish, Louisiana, United States. The population was 12,257 at the 2010 census. At the 2020 population estimates program, the population of the city was 11,927. It is located 150 miles (240 km) west of New Orleans, 60 miles (97 km) southwest of Baton Rouge and 21 miles (34 km) southwest of Lafayette.