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321 Area Code

Area Code Overview

Area code 321 is a geographic telephone area code in Florida that went into service on November 1, 1999. The geographic regions covered by this area code overlay has a population of approximately 2,047,245.

Overlay and Dialing Rules

  • Area Code: 321
  • State: Florida
  • Type: General Purpose Code
  • In Service Date: November 1, 1999
  • Overlay Complex: 321/407/689
  • 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 321

This area code is ranked 210th out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 12th out of 23.

4,346,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 321

Total assigned 4,346,000
Wireless
1,994,000 assigned
45.88%
Wireline and VoIP
2,191,000 assigned
50.41%
Other / Unclassified
161,000 assigned
3.70%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 321

Estimated assigned wireless phone numbers: 1,994,000

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

T-Mobile 1,036,000 (51.96%)
AT&T Wireless 575,000 (28.84%)
Verizon Wireless 268,000 (13.44%)
AERIAL COMMUNICATIONS, INC. 115,000 (5.77%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 321

Estimated assigned wireline and VoIP phone numbers: 2,191,000

Onvoy 522,000 (23.82%)
AT&T 478,000 (21.82%)
Bandwidth 409,000 (18.67%)
Lumen 240,000 (10.95%)
BHN IP ENABLED SERVICES, LLC 116,000 (5.29%)
MCI WORLDCOM COMMUNICATIONS, INC. - FL 98,000 (4.47%)
Peerless Network 80,000 (3.65%)
Spectrum 65,000 (2.97%)
PAETEC ITEL, LLC 64,000 (2.92%)
Commio 38,000 (1.73%)
Telnyx 36,000 (1.64%)
TERRA NOVA TELECOM, INC. - FL 16,000 (0.73%)

Other / Unclassified Assigned Numbering in Area Code 321

Estimated assigned other or unclassified phone numbers: 161,000

IP HORIZON LLC 40,000 (24.84%)
SPOK, INC. 30,000 (18.63%)
AMERICAN MESSAGING SERVICES, LLC 20,000 (12.42%)
TELEPORT COMMUNICATIONS AMERICA, LLC - FL 20,000 (12.42%)
FRACTEL, LLC 16,000 (9.94%)
CORETEL FLORIDA, INC. - FL 11,000 (6.83%)
ABC PAGING CITY BEEPERS, INC. 10,000 (6.21%)
SMART CITY SOLUTIONS II, LLC DBA SMART CITY METRO 7,000 (4.35%)
TON80 COMMUNICATIONS, LLC 4,000 (2.48%)
FUSION CLOUD SERVICES, LLC 2,000 (1.24%)
XO FLORIDA, INC. 1,000 (0.62%)

Cities and Towns in Area Code 321

Apopka, Florida Celebration, Florida Cocoa Beach, Florida Cocoa, Florida East Orange, Florida Eau Gallie, Florida Geneva, Florida Kenansville, Florida Kissimmee, Florida Lake Buena Vista, Florida Melbourne, Florida Montverde, Florida Orlando, Florida Oviedo, Florida Saint Cloud, Florida Sanford, Florida Titusville, Florida Windermere, Florida Winter Garden, Florida Winter Park, Florida

These geographic regions are also served by area codes 407 and 689.

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 321, 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