There are four deaneries in the Diocese consisting of 37 church parishes with approximately 25,060 registered families. The diocese itself comprises 5,619 square miles in the state of Louisiana. It has a total population of 302,006 of which 90,980 are Catholic.

North Central Deanery:Lake Charles, Iowa and Moss Bluff — includes seven churches in a portion of the civil parish of Calcasieu

South Central Deanery:Lake Charles, Bell City, Big Lake and Creole — includes seven churches in the civil parishes of Calcasieu and Cameron

West Deanery:Sulphur, Carlyss, DeQuincy, DeRidder, Hackberry, Maplewood, Ragley, Vinton and Westlake — includes 10 churches in the civil parishes of Beauregard, Calcasieu, and Cameron

East Deanery:Jennings, Elton, Fenton, Kinder, Lake Arthur, Oakdale, Oberlin, Raymond and Welsh — includes 13 churches in the civil parishes of Allen and Jefferson Davis

Schools
There are six Catholic schools in the diocese, Saint Louis Catholic being the lone Catholic high school and located in Lake Charles. The five feeder schools are Immaculate Conception Cathedral School, St. Margaret of Scotland Catholic School, and Our Lady Queen of Heaven Catholic School, all in Lake Charles; Our Lady’s Catholic School in Sulphur; and Our Lady Immaculate Catholic School in Jennings. Approximate total enrollment for the 2024-2025 school year is 2,274 students.