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AREA CODE · TEXAS

Area code 737

Area code 737 covers Austin, Texas. Map, time zone, overlays, carriers, the full list of prefixes and how to dial it.

State: Texas Major City: Austin Central Time (CT) Overlay: 512/737
01 / WHERE IT IS

Where is area code 737?

Area code 737 is assigned to Austin and the surrounding region in Texas. Calls to numbers that start with 737 are routed to this area.

Area code 737 shares its territory with 512. Because it is an overlay, local calls require dialing all 10 digits.

Counties covered

Travis CountyWilliamson CountyHays CountyBastrop CountyCaldwell CountyMilam CountyLampasas CountyBurnet County

Line types

  • Mobile 30.41%
  • Landline 69.59%
02 / MAP

Area code 737 on the map

The shaded area joins the code’s numbering centers; the marker shows its main city.

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© OpenStreetMap contributors

03 / LOCAL TIME

Current time in Austin

This area code is in the Central Time (CT) time zone.

Local timeAustin, TX--:--:--

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America/ChicagoLive
04 / HOW TO DIAL

How to call Austin

WITHIN THE US737 XXX XXXX

Always 10 digits — landline, mobile or VoIP. Local, long distance or a different state: the format is always the same. You do not need to dial the 1 first.

FROM ABROAD+1 737 XXX XXXX

Exit codes: 00 Europe/Mexico · 011 Canada · 010 Japan · + universal

WHATSAPP / IMESSAGE+1 737 XXX XXXX

Always save the number in international format so messaging apps recognize it correctly:

Call typeTraditional landlineMobile / VoIP
Local (same area code)10 digits10 digits
US long distance1 + 10 digits10 digits
Emergency911911
🌐Universal+1 737 555 0123
🇪🇸🇲🇽Spain / Mexico00 1 737 555 0123
🇦🇺Australia0011 1 737 555 0123
🇯🇵Japan010 1 737 555 0123
HAVE THE FULL NUMBER?

Learn more about that number.

Check the line type and the carrier the number block was originally assigned to.

10 digits to see the carrier and line type of the number

05 / CARRIERS

Carriers in area code 737

Share of the number blocks by carrier and line type.

Landline

Sinch
35%
Fractel
12%
Bandwidth
9%
AT&T
6%
CoreTel Communications
4%
Others
34%

Mobile

T-MOBILE USA
33%
Verizon Wireless
29%
AT&T Mobility
28%
Sinch
6%
Boost Mobile
4%

Carrier shown is the original assignment of each number block and may differ today because of number portability.

06 / PREFIXES

Complete list of prefixes for area code 737

319 number blocks (NXX) assigned in this area code.

PrefixTypeCityCarrier
(737) 200 Landline Elgin SinchONVOY, LLC - TX
(737) 201 Landline Taylor SinchONVOY, LLC - TX
(737) 202 Landline Austin Lumen TechnologiesLEVEL 3 COMMUNICATIONS, LLC - TX
(737) 203 Landline Austin Verizon BusinessMCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX
(737) 204 Landline Austin SinchONVOY, LLC - TX
(737) 205 Landline Austin SinchONVOY, LLC - TX
(737) 206 Mobile Bastrop T-MOBILE USAT-MOBILE USA, INC.
(737) 207 Landline Austin AT&TTELEPORT COMMUNICATIONS AMERICA, LLC - TX
(737) 208 Mobile Austin Verizon WirelessCELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX
(737) 209 Landline Austin SpectrumTWC IP ENABLED SERVICES, LLC

Showing 10 of 319 prefixes

07 / FAQ

Frequently asked questions about area code 737

Where is area code 737 used?
Area code 737 serves Austin and the surrounding area in Texas, including Travis County, Williamson County, Hays County, Bastrop County, Caldwell County.
What city is area code 737 from?
The main city of area code 737 is Austin, TX.
What time zone is area code 737 in?
Area code 737 is in the Central Time (CT) time zone (America/Chicago).
Is 737 an overlay area code?
Yes. It shares its territory with 512. In an overlay, every call requires dialing all 10 digits.
How do I call a number with area code 737 from the United States?
Dial the 10 digits: 737 + 7-digit number. For some long-distance calls from a landline you may need to add a 1 first.
How do I call a 737 number from another country?
Dial your country's exit code (or +), then 1, then 737 and the seven-digit number. From a mobile you can use +1 737 XXX XXXX.
Which carriers use area code 737?
Most landline blocks belong to Sinch and most mobile blocks to T-MOBILE USA. The carrier shown is the original assignment and may differ today because of number portability.
Is area code 737 for landlines, mobiles or both?
Both. About 69.59% of the number blocks are landline, 30.41% mobile.
How do I save a 737 number in WhatsApp or my phone?
Save it in international format: +1 737 XXX XXXX. That way WhatsApp, iMessage and Telegram recognize it from any country.
Is it safe to answer calls from area code 737?
The area code only shows the region a number was assigned to; it does not tell you who is calling. Scammers can fake any area code, so do not share personal or banking information with unknown callers, and let unknown numbers go to voicemail.
KEEP EXPLORING

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Other area codes in Texas

210 · San Antonio214 · Dallas254 · Waco281 · Houston325 · Abilene346 · Houston361 · Corpus Christi409 · Beaumont430 · Longview432 · Terminal469 · Dallas512 · Austin682 · Arlington713 · Houston726 · San Antonio806 · Lubbock817 · Fort Worth830 · New Braunfels832 · Houston903 · Tyler915 · El Paso936 · Conroe940 · Wichita Falls945 · Grand Prairie956 · Laredo972 · Dallas979 · Bryan-College Station

View all Texas area codes →