Founded in 1912, Jefferson Davis Parish is one of 64 parishes in the state of Louisiana. Historically, Jefferson Davis Parish was formed from part of Calcasieu Parish. The city of Jennings is the parish seat. With FIPS code of 53, Jefferson Davis Parish has a population of 32,345 and area of 659 square miles (1,707 km2).
List of all cities in Jefferson Parish, LA alphabetically
| City/Town | Postal Code | Area Code |
| Avondale, LA | 70094 | 504 |
| Barataria, LA | 70036 | 504 |
| Beachview, LA | 70062 | 504 |
| Bridge City, LA | 70094 | 504 |
| Elmwood, LA | 70123 | 504 |
| Grand Isle, LA | 70358 | 504 |
| Green Lawn Terrace, LA | 70062 | 504 |
| Gretna, LA | 70053 | 504 |
| 70054 | 504 | |
| 70056 | 504 | |
| Harahan, LA | 70123 | 504 |
| Harvey, LA | 70058 | 504 |
| 70059 | 504 | |
| Jefferson, LA | 70121 | 504 |
| Kenner, LA | 70062 | 504 |
| 70063 | 504 | |
| 70064 | 504 | |
| 70065 | 504 | |
| 70097 | 504 | |
| La Gas Serv Inc, LA | 70060 | 504 |
| Lafitte, LA | 70067 | 504 |
| Marrero, LA | 70072 | 504 |
| 70073 | 504 | |
| Metairie, LA | 70001 | 504 |
| 70002 | 504 | |
| 70003 | 504 | |
| 70004 | 504 | |
| 70005 | 504 | |
| 70006 | 504 | |
| 70009 | 504 | |
| 70010 | 504 | |
| 70011 | 504 | |
| 70033 | 504 | |
| 70055 | 504 | |
| 70060 | 504 | |
| New Orleans, LA | 70121 | 504 |
| 70123 | 504 | |
| 70141 | 504 | |
| 70181 | 504 | |
| 70183 | 504 | |
| River Ridge, LA | 70123 | 504 |
| Shrewsbury, LA | 70121 | 504 |
| South Kenner, LA | 70094 | 504 |
| Terrytown, LA | 70056 | 504 |
| Waggaman, LA | 70094 | 504 |
| Westwego, LA | 70094 | 504 |
| 70096 | 504 |