Area Code 504 — New Orleans, Louisiana

NANP area code

504

UTC−6, UTC−5 during daylight saving

State
Louisiana
Primary city
New Orleans
Time zone
Central
In service
1947

The code reaches 24 communities and 6 parishes across Louisiana.

Was this call legitimate?

The area code itself carries no risk signal. 504 is assigned to New Orleans, Louisiana, so a call from it is consistent with a real caller in that area — but the digits alone prove nothing, because they can be forged.

Caller ID is set by whoever places the call, not verified by the network. That is why neighbour spoofing works: an operation anywhere in the world can display a number that matches the area code — and often the first three digits after it — of the person being called, so the call looks local. Every community in the 504 territory is a plausible-looking origin for a forged 504 number, which is why one can be made to look like a neighbour to so many people.

If you did not recognise the call: let it go to voicemail — a legitimate caller with real business will leave one. Do not return the call using the number shown; look the organisation up independently and call the number you found. Never confirm personal details, card numbers, or one-time codes to someone who called you, however plausible the number looked.

Codes.zone publishes no complaint counts, risk scores, or caller identities. We hold no data on individual numbers and will not estimate what we cannot source.

Local time and when to call back

Time there now

Central · UTC−6, UTC−5 during daylight saving

Reasonable callback window

8:00 AM – 9:00 PM

local time in Central

Federal rules bar telemarketing calls to a residence outside 8:00 AM–9:00 PM in the called party's own time zone. It is a sensible bound for a personal callback too — and a caller who rang you well outside it was not observing it.

Overlay codes

504 is the only area code serving its territory — it has no overlay in the current numbering plan for Louisiana. Where a region has no overlay, a number's area code still corresponds to a single geographic area.

Cities served

largest 20 by ZIP count
Communities served by area code 504, ranked by how many ZIP codes each holds.
CityZIP codesParish
New Orleans61Jefferson Parish
Metairie12Jefferson Parish
Kenner5Jefferson Parish
Covington3St. Tammany Parish
Gretna3Jefferson Parish
Mandeville3St. Tammany Parish
Belle Chasse2Plaquemines Parish
Chalmette2St. Bernard Parish
Harvey2Jefferson Parish
Marrero2Jefferson Parish
Westwego2Jefferson Parish
Ama1St. Charles Parish
Arabi1St. Bernard Parish
Barataria1Jefferson Parish
Braithwaite1Plaquemines Parish
Folsom1St. Tammany Parish
Lafitte1Jefferson Parish
Meraux1St. Bernard Parish
Pilottown1Plaquemines Parish
Port Sulphur1Plaquemines Parish

4 further communities not listed. All Louisiana area codes →

Each point is a community served by 504, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Scope every community matched to 504. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot), GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . Coordinates are place reference points, not boundaries.

Parishes

Prefixes inside 504

We do not publish the NXX prefixes inside 504. The assignment of prefixes to rate centres comes from LERG routing data, which is proprietary, and we will not estimate it from postal data — ZIP codes and telephone prefixes do not map onto each other. Awaiting a clean-rights NPA-NXX source.