Acadia Parish is a parish located in the U.S. state of Louisiana. At the 2020 U.S. census, the population was 57,576. The parish seat is Crowley. The parish was founded from parts of St. Landry Parish in 1886, and later an election was held to determine the parish seat, ending when Crowley beat Rayne and Prairie Hayes. Acadia Parish is included in the Lafayette metropolitan statistical area.

Crowley is a city in, and the parish seat of, Acadia Parish in the U.S. state of Louisiana. At the 2020 United States census, Crowley had a population of 11,710. Crowley is the principal city of the Crowley micropolitan statistical area, which includes all of Acadia Parish. It is also part of the larger Lafayette–Acadiana combined statistical area.