About Area Code 504
- Region Code
- 504
- City
- New Orleans
- State
- Louisiana
- Population
- 1,156,627
- Largest City
- New Orleans
- Neighboring Codes
- 985 (Houma, Louisiana)
- Time Zone
- Central Time
Louisiana
(504) Area Code 504 — New Orleans, Louisiana
504 Area Code – New Orleans, Louisiana: Location, Time Zone & History
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Map of Area Code 504
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History & Cultural Notes
Few area codes carry the civic identity that 504 has in New Orleans. Locally it functions as a shorthand for the city itself, showing up in business branding and music — including 504 Records and the rap group 504 Boyz — with May 4 observed locally as "504 Day." That identity sits atop a city recognized as the historic birthplace of jazz and home to Mardi Gras, one of the best-known annual carnival celebrations in the country.
The code's boundaries have shifted repeatedly since its 1947 assignment to the whole state of Louisiana: 318 split off in 1957, 225 for Baton Rouge followed in 1998, and 985 took much of the surrounding southeastern parishes in 2001. Notably, after Hurricane Katrina destroyed local switching facilities in lower Plaquemines Parish, communities there that had moved to 985 were shifted back into 504 in 2007–2008.
Today's 504 territory reaches beyond New Orleans to Metairie, Kenner, Slidell, Belle Chasse, and Chalmette. Its economy centers on the Port of New Orleans, a long-standing hub for Mississippi River maritime trade, alongside tourism and hospitality, oil and gas, and aerospace and shipbuilding activity.