Allen Parish, Louisiana

Allen Parish
Allen Parish Courthouse in Oberlin (near sunset)
Location within the U.S. state of Louisiana
Louisiana's location within the U.S.
Coordinates: 30°40′N 92°50′W / 30.66°N 92.83°W / 30.66; -92.83
Country United States
State Louisiana
Founded1912
Named afterHenry Watkins Allen
SeatOberlin
Largest cityOakdale
Area
  Total
766 sq mi (1,980 km2)
  Land762 sq mi (1,970 km2)
  Water4.1 sq mi (11 km2)  0.5%
Population
 (2020)
  Total
22,750
  Density30/sq mi (11/km2)
Time zoneUTC−6 (Central)
  Summer (DST)UTC−5 (CDT)
Area code
Congressional district4th
Websitewww.allenparish.com

Allen Parish (French: Paroisse d'Allen) is a parish located in the U.S. state of Louisiana. As of the 2020 census, the population was 22,750. The parish seat is Oberlin and the largest city is Oakdale. Allen Parish is in southwestern Louisiana, southwest of Alexandria.

Allen Parish is named for former Confederate States Army general and Governor of Louisiana Henry Watkins Allen. It was separated in 1912 from the larger Calcasieu Parish to the southwest.