504 Area Code: New Orleans, Louisiana

The 504 area code covers New Orleans, the surrounding parishes of southeast Louisiana, and the immediate metropolitan footprint along the lower Mississippi. New Orleans itself sits on a low alluvial plain between the Mississippi and Lake Pontchartrain, organized around a famously dense downtown grid — the French Quarter and the surrounding faubourgs preserve a layered architectural history that traces through French, Spanish, and American periods of the city. The local working economy reflects the port, tourism, healthcare, and a substantial cultural and creative-industries base that has shaped New Orleans for generations.

In records the directory has compiled for 504 numbers, other Louisiana cities — Baton Rouge, Houma, Lafayette, and Shreveport — recur frequently. None of those are inside the 504 footprint. The pattern reflects standard public-record dynamics, with phone numbers porting across Louisiana and addresses linked across multiple cities. The directory currently documents 464 distinct prefixes within 504 in detail, a working subset of the prefix population the code carries.

New Orleans's home values come in close to the US median, with median household income running below the national figure. The city's median age sits a touch under the US reading, and population places New Orleans as the largest city in Louisiana — substantial enough to anchor a metropolitan area that combines a major port, a long-running tourism corridor, and a cultural identity recognized far beyond the state. The broader 504 footprint covers the city along with the immediate suburbs of Jefferson and St. Bernard parishes.