Louisiana · Central Time
504 Area Code
Area code 504 is in Louisiana, serving New Orleans and nearby Jefferson, St. Bernard and Plaquemines parishes. It is in the Central Time zone.
Last updated October 1, 2026 · Source: NANPA
Where is the 504 area code?
504 is a Louisiana area code covering New Orleans and nearby Jefferson, St. Bernard and Plaquemines parishes. In the wider directory it sits in the South region.
Cities in the 504 area code
- New Orleans
- Metairie
- Kenner
- Marrero
- Harvey
- Chalmette
- Gretna
- Terrytown
- Westwego
- Belle Chasse
- Harahan
- River Ridge
Counties served by 504
Orleans Parish, Jefferson Parish, St. Bernard Parish and Plaquemines Parish.
Dialing 504
New Orleans, LA is currently served by the single area code 504, with no overlay. Ten-digit dialing (area code + seven-digit number) always works and is increasingly the norm nationwide; some local calls may still connect with seven digits. If a future overlay is added, 10-digit dialing would become mandatory.
From outside the US, dial +1 504 followed by the seven-digit number.
History of the 504 area code
504 is one of the original area codes assigned in 1947, when AT&T and Bell Laboratories created the North American Numbering Plan and divided the country into the first 86 numbering plan areas. It has served the New Orleans area ever since.
Is 504 a scam or spam risk?
504 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 504 number on your screen is no guarantee the caller is in New Orleans, LA or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Louisiana area codes
Explore more
See every code in Louisiana, compare codes across the South region, or view all Central Time codes. You can also browse the 5XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
504 area code FAQ
Where is the 504 area code?
The 504 area code is in Louisiana, covering New Orleans and nearby Jefferson, St. Bernard and Plaquemines parishes, in the South region.
What cities are in the 504 area code?
Cities in the 504 area code include New Orleans, Metairie, Kenner, Marrero, Harvey, Chalmette, Gretna, Terrytown, Westwego and Belle Chasse.
What time zone is 504 in?
504 is in the Central Time zone.
When did the 504 area code start?
504 went into service on January 1, 1947 as one of the original 1947 North American area codes.
Do I have to dial 10 digits for 504?
Ten-digit dialing always works, and many areas now require it; some local calls in this area may still connect with seven digits.
Is 504 a toll-free or premium code?
No. 504 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.