Area Code Overview

Area code 504 is a geographic telephone area code in Louisiana that went into service on January 1, 1947. The geographic regions covered by this area code overlay has a population of approximately 789,954.

Overlay and Dialing Rules

Area Code: 504
State: Louisiana
Type: General Purpose Code
In Service Date: January 1, 1947
Overlay Complex: 504
Local Dialing Plan: This area does require you to dial the area code when calling locally.

Estimated Number of Assigned Phone Numbers in Area Code 504

This area code is ranked 195th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 2nd out of 5.

4,693,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 504

Total assigned 4,693,000

Wireless

2,069,000 assigned

44.09%

Wireline and VoIP

2,283,000 assigned

48.65%

Other / Unclassified

341,000 assigned

7.27%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 504

Estimated assigned wireless phone numbers: 2,069,000

Numbers may later be ported to another carrier, but this chart reflects original number assignment, not current subscriber share.

VOICESTREAM GSM I, LLC 922,000 (44.56%)

AT&T Wireless 610,000 (29.48%)

Verizon Wireless 335,000 (16.19%)

T-Mobile 201,000 (9.71%)

Optimum Mobile 1,000 (0.05%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 504

Estimated assigned wireline and VoIP phone numbers: 2,283,000

AT&T 1,089,000 (47.70%)

Onvoy 380,000 (16.64%)

Bandwidth 287,000 (12.57%)

Lumen 134,000 (5.87%)

Comcast Business 130,000 (5.69%)

Spectrum 75,000 (3.29%)

PAETEC ITEL, LLC 73,000 (3.20%)

Airus 23,000 (1.01%)

NUSO 17,000 (0.74%)

Commio 16,000 (0.70%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC - LA 13,000 (0.57%)

TERRA NOVA TELECOM INC. 12,000 (0.53%)

Other / Unclassified Assigned Numbering in Area Code 504

Estimated assigned other or unclassified phone numbers: 341,000

SPOK, INC. 250,000 (73.31%)

TELEPORT COMMUNICATIONS AMERICA LA - LLC 35,000 (10.26%)

ADVANCED TEL., INC. - LA 20,000 (5.87%)

FRACTEL, LLC 7,000 (2.05%)

INTRADO COMMUNICATIONS, LLC 7,000 (2.05%)

IP HORIZON LLC 5,000 (1.47%)

XFONE USA, INC. - LA 5,000 (1.47%)

FIVE9, INC. 2,000 (0.59%)

HD CARRIER LLC 2,000 (0.59%)

RESERVE LONG DIST CO DBA RESERVE TELECOMM - LA 2,000 (0.59%)

TON80 COMMUNICATIONS, LLC 2,000 (0.59%)

AIRESPRING, INC. 1,000 (0.29%)

Cities and Towns in Area Code 504

Jesuit Bend, Louisiana Kenner, Louisiana Lafitte, Louisiana New Orleans, Louisiana Venice, Louisiana

How These Figures Were Built

These figures are estimates based on public phone-number assignment records. They are meant to show the likely mix of assigned phone numbers associated with area code 504, not live customer counts.

Some providers may have assigned phone numbers tied to this area code even if they do not actively market or sell service locally. These figures reflect public number-assignment records, not confirmed local service availability.

They also do not reflect number portability at the individual phone-number level, so some numbers may now be used on a different network or by a different provider than the original assignment records suggest.

Population data and locality matching provided by GeoNames.

Last refreshed: April 15, 2026 6:22 pm