Area Code 504
Louisiana
Area code 504 serves Louisiana, primarily New Orleans, in the Central Time (CT) time zone. It has served the region since 01-Jan-1947.
Area Code Splits
Parts of this area code’s original geographic region were later assigned new area codes through splits. When a split occurs, some customers in the original area code region are assigned the new area code.
Split into: area code 225 (Baton Rouge), area code 985 (Houma).
Demographics & Economics
- Total Population
- 826,879
- Population Density
- 465 people/sq miabove U.S. average (U.S.: 93 people/sq mi)
- Median Household Income
- $57,638below U.S. median (U.S.: $75,144)
- Poverty Rate
- 19.4%above U.S. average (U.S.: 11.5%)
- Unemployment Rate
- 6.8%above U.S. average (U.S.: 3.6%)
- Education Attainment
- Bachelor's Degree+34.4%near U.S. average (U.S.: 33.7%)High School or Lower29.9%
Statistics are population-weighted aggregations from Census ACS 5-year estimates. Population figures are approximate — see Sources & Methodology for details on how area code populations are derived.
See how this area code compares to all US area codes in the income ranking and density ranking.
Time Zone
- Central Time (CT)
NANPA Relief Status
According to the latest NANPA analysis (July 2026), this area code is not currently listed as exhausting within the next 36 months. No relief planning is in progress for this NPA.
Source: NANPA NPA Relief Planning Reports · See all relief planning statuses
Current Time
Prefix Utilization
Geographic Coverage
State
LA
Major Cities
- New Orleans
- Metairie
- Kenner
- Marrero
- Terrytown
- Chalmette
- Harvey
- Gretna
- Estelle
- River Ridge
- Woodmere
- Timberlane
- Belle Chasse
- Waggaman
- Jefferson
- Harahan
- Westwego
- Meraux
- St. Rose
- Elmwood
- Avondale
- Violet
- Arabi
- New Orleans Station
and 14 more cities
History
Area code 504 is one of the original area codes established in 1947 when the North American Numbering Plan (NANP) was created. Over time, area codes area code 225 and area code 985 were split from 504.
Demographics
The estimated population served by area code 504 is approximately 826,879. The population density is 465 people per square mile, which is higher than the national average of 93. The median household income is $57,638, which is lower than the national median of $75,144. Approximately 34.4% of adults hold a bachelor's degree or higher, compared to the national rate of 33.7%. This rate is near the national average. The poverty rate stands at 19.4%, which is higher than the national rate of 11.5%.
County Coverage
Population-weighted county share based on aggregated ZCTA population (100% = total mapped population for area code 504).
| County | Population | Share |
|---|---|---|
| Jefferson, LA | 376,199 | 45.5% |
| Orleans, LA | 376,035 | 45.5% |
| St. Bernard, LA | 44,960 | 5.4% |
| Plaquemines, LA | 28,212 | 3.4% |
| St. Charles, LA | 1,473 | 0.2% |
Area Code 504 Family Tree
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Area code 504 was originally assigned in 01-Jan-1947 to serve LA. Over the years, it has generated 2 descendant area codes through a combination of geographic splits and overlays as demand for telephone numbers grew.
Call Context
This area code covers a metropolitan region in LA with moderate to high population density, centered on New Orleans and surrounding communities.
Nearby Area Codes
Area codes geographically closest to 504.
Other Area Codes in Louisiana
Area codes that also serve Louisiana, linked for easy comparison.