Area Code Overview

Area code 813 is a geographic telephone area code in Florida that went into service on January 1, 1953. The geographic regions covered by this area code overlay has a population of approximately 1,581,426.

Overlay and Dialing Rules

Area Code: 813
State: Florida
Type: General Purpose Code
In Service Date: January 1, 1953
Overlay Complex: 656/813
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 813

This area code is ranked 14th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 2nd out of 23.

7,023,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 813

Total assigned 7,023,000

Wireless

2,607,000 assigned

37.12%

Wireline and VoIP

3,976,000 assigned

56.61%

Other / Unclassified

440,000 assigned

6.27%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 813

Estimated assigned wireless phone numbers: 2,607,000

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

AERIAL COMMUNICATIONS, INC. 978,000 (37.51%)

Verizon Wireless 664,000 (25.47%)

T-Mobile 496,000 (19.03%)

AT&T Wireless 468,000 (17.95%)

Optimum Mobile 1,000 (0.04%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 813

Estimated assigned wireline and VoIP phone numbers: 3,976,000

Verizon 1,656,000 (41.65%)

Onvoy 506,000 (12.73%)

Bandwidth 377,000 (9.48%)

Lumen 335,000 (8.43%)

MCI WORLDCOM COMMUNICATIONS, INC. - FL 335,000 (8.43%)

BHN IP ENABLED SERVICES, LLC 259,000 (6.51%)

PAETEC ITEL, LLC 189,000 (4.75%)

Spectrum 93,000 (2.34%)

Peerless Network 81,000 (2.04%)

YMAX COMMUNICATIONS CORP. - FL 65,000 (1.63%)

Telnyx 20,000 (0.50%)

TERRA NOVA TELECOM, INC. - FL 15,000 (0.38%)

Other / Unclassified Assigned Numbering in Area Code 813

Estimated assigned other or unclassified phone numbers: 440,000

TELEPORT COMMUNICATIONS AMERICA, LLC - FL 135,000 (30.68%)

SPOK, INC. 90,000 (20.45%)

HD CARRIER LLC 72,000 (16.36%)

AMERICAN MESSAGING SERVICES, LLC 40,000 (9.09%)

ABC PAGING CITY BEEPERS, INC. 30,000 (6.82%)

IP HORIZON LLC 23,000 (5.23%)

CORETEL FLORIDA, INC. - FL 16,000 (3.64%)

INTRADO COMMUNICATIONS, LLC 9,000 (2.05%)

INVOXIO INCORPORATED 7,000 (1.59%)

TON80 COMMUNICATIONS, LLC 7,000 (1.59%)

FRACTEL, LLC 5,000 (1.14%)

TELIMIZE, LLC 3,000 (0.68%)

Cities and Towns in Area Code 813

Plant City, Florida Tampa, Florida Zephyrhills, Florida

These geographic regions are also served by area code 656.

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 813, 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