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737 Area Code

Area Code Overview

Area code 737 is a geographic telephone area code in Texas that went into service on July 1, 2013. The geographic regions covered by this area code overlay has a population of approximately 1,970,235.

Overlay and Dialing Rules

  • Area Code: 737
  • State: Texas
  • Type: General Purpose Code
  • In Service Date: July 1, 2013
  • Overlay Complex: 512/737
  • 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 737

This area code is ranked 261st out of 363 nationwide in estimated assigned phone numbers. Within the state territory it serves, it is ranked 24th out of 28.

3,026,000

Estimated Service-Type Mix of Assigned Phone Numbers in Area Code 737

Total assigned 3,026,000
Wireless
1,301,000 assigned
42.99%
Wireline and VoIP
1,405,000 assigned
46.43%
Other / Unclassified
320,000 assigned
10.58%

Estimated Share of Wireless Numbers Originally Assigned to Each Carrier in Area Code 737

Estimated assigned wireless phone numbers: 1,301,000

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

AT&T Wireless 496,000 (38.12%)
T-Mobile 493,000 (37.89%)
Verizon Wireless 309,000 (23.75%)
Optimum Mobile 3,000 (0.23%)

Estimated Share of Wireline and VoIP Numbers Originally Assigned to Each Carrier in Area Code 737

Estimated assigned wireline and VoIP phone numbers: 1,405,000

Onvoy 690,000 (49.11%)
Bandwidth 206,000 (14.66%)
Spectrum 157,000 (11.17%)
Peerless Network 79,000 (5.62%)
Lumen 75,000 (5.34%)
Telnyx 51,000 (3.63%)
Commio 47,000 (3.35%)
Vonage 17,000 (1.21%)
AT&T 14,000 (1.00%)
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 14,000 (1.00%)
NUSO 13,000 (0.93%)
FOREMOST TELECOMMUNICATIONS CORPORATION - TX 11,000 (0.78%)

Other / Unclassified Assigned Numbering in Area Code 737

Estimated assigned other or unclassified phone numbers: 320,000

TELEPORT COMMUNICATIONS AMERICA, LLC - TX 152,000 (47.50%)
TON80 COMMUNICATIONS, LLC 47,000 (14.69%)
FRACTEL, LLC 31,000 (9.69%)
IP HORIZON LLC 27,000 (8.44%)
INVOXIO INCORPORATED 19,000 (5.94%)
U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 9,000 (2.81%)
AUSTIN BESTLINE COMPANY 8,000 (2.50%)
USFON, INC. - TX 8,000 (2.50%)
HD CARRIER LLC 5,000 (1.56%)
GRANDE COMMUNICATIONS NETWORKS, INC. - TX 4,000 (1.25%)
AHOI LLC 2,000 (0.63%)
FIVE9, INC. 2,000 (0.63%)

Cities and Towns in Area Code 737

Adamsville, Texas Austin, Texas Bastrop, Texas Bertram, Texas Briggs, Texas Buchanan Dam, Texas Buda, Texas Burnet, Texas Coupland, Texas Dale, Texas Dripping Springs, Texas Elgin, Texas Fentress, Texas Georgetown, Texas Granger, Texas Hutto, Texas Jarrell, Texas Kempner, Texas Kyle, Texas Lampasas, Texas Leander, Texas Liberty, Texas Lockhart, Texas Lometa, Texas Martindale, Texas Mc Dade, Texas Milano, Texas Paige, Texas Rockdale, Texas San Gabriel, Texas San Marcos, Texas Smithville, Texas Taylor, Texas Thorndale, Texas Wimberley, Texas

These geographic regions are also served by area code 512.

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 737, 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