Welsh is a town in Jefferson Davis Parish, Louisiana. The population was 3,226 at the time of the 2010 census. It is part of the Jennings Micropolitan Statistical Area.

Jefferson Davis Parish is a parish located in the U.S. state of Louisiana. As of the 2020 census, the population was 32,250. The parish seat is Jennings. Jefferson Davis Parish is named after the president of the Confederacy during the American Civil War, Jefferson Davis. It is located in southwestern Louisiana and forms a part of the Acadiana region.