Founded in 1912, Allen Parish is one of 64 parishes in the state of Louisiana. Historically, Allen Parish was formed from part of Calcasieu Parish. The city of Oberlin is the parish seat. With FIPS code of 3, Allen Parish has a population of 22,687 and area of 766 square miles (1,984 km2).
List of all cities in Allen Parish, LA alphabetically
| City/Town | Postal Code | Area Code |
| Beaver, LA | 71463 | 318 |
| Bond, LA | 71463 | 318 |
| Elizabeth, LA | 70638 | 318 |
| Grant, LA | 70644 | 337 |
| Kinder, LA | 70648 | 337 |
| Leblanc, LA | 70651 | 337 |
| Mittie, LA | 70654 | 337 |
| Oakdale, LA | 71463 | 318 |
| Oberlin, LA | 70655 | 337 |
| Reeves, LA | 70658 | 337 |
| Ward, LA | 71463 | 318 |