Area Code Overview

Area code 904 is a geographic telephone area code in Florida that went into service on July 11, 1965. The geographic regions covered by this area code overlay has a population of approximately 1,616,568.

Overlay and Dialing Rules

Area Code: 904
State: Florida
Type: General Purpose Code
In Service Date: July 11, 1965
Overlay Complex: 324/904
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 904

This area code is ranked 35th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 5th out of 23.

6,705,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 904

Total assigned 6,705,000

Wireless

2,659,000 assigned

39.66%

Wireline and VoIP

3,574,000 assigned

53.30%

Other / Unclassified

472,000 assigned

7.04%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 904

Estimated assigned wireless phone numbers: 2,659,000

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

T-Mobile 1,278,000 (48.06%)

AT&T Wireless 804,000 (30.24%)

Verizon Wireless 576,000 (21.66%)

Optimum Mobile 1,000 (0.04%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 904

Estimated assigned wireline and VoIP phone numbers: 3,574,000

AT&T 1,341,000 (37.52%)

Onvoy 680,000 (19.03%)

Bandwidth 376,000 (10.52%)

Lumen 288,000 (8.06%)

Comcast Business 208,000 (5.82%)

Spectrum 162,000 (4.53%)

PAETEC ITEL, LLC 149,000 (4.17%)

MCIMETRO ACCESS TRANSMISSION SERVICES LLC 112,000 (3.13%)

Peerless Network 95,000 (2.66%)

Telnyx 38,000 (1.06%)

Commio 35,000 (0.98%)

TERRA NOVA TELECOM, INC. - FL 26,000 (0.73%)

Other / Unclassified Assigned Numbering in Area Code 904

Estimated assigned other or unclassified phone numbers: 472,000

TELEPORT COMMUNICATIONS AMERICA, LLC - FL 164,000 (34.75%)

AMERICAN MESSAGING SERVICES, LLC 60,000 (12.71%)

SPOK, INC. 50,000 (10.59%)

CORETEL FLORIDA, INC. - FL 46,000 (9.75%)

IP HORIZON LLC 41,000 (8.69%)

ABC PAGING CITY BEEPERS, INC. 30,000 (6.36%)

NORTHEAST FLORIDA TEL. CO., INC. 30,000 (6.36%)

1ST POINT COMMUNICATIONS, LLC 15,000 (3.18%)

FRACTEL, LLC 12,000 (2.54%)

TON80 COMMUNICATIONS, LLC 11,000 (2.33%)

XO FLORIDA, INC. 6,000 (1.27%)

FIVE9, INC. 2,000 (0.42%)

Cities and Towns in Area Code 904

Baldwin, Florida Callahan, Florida Fernandina Beach, Florida Green Cove Springs, Florida Hastings, Florida Hilliard, Florida Jacksonville Beach, Florida Jacksonville, Florida Kingsley, Florida Lawtey, Florida Macclenny, Florida Maxville, Florida Middleburg, Florida Orange Park, Florida Ponte Vedra Beach, Florida Sanderson, Florida St. Johns, Florida Starke, Florida Yulee, Florida

These geographic regions are also served by area code 324.

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 904, 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