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US area code · Texas

Area code 737

Where the 737 area code is, its overlay and how to dial a +1 737 number from anywhere.

CoversAustin, TexasTime zoneCentral (CT)TypeOverlay
Quick answer

The 737 area code is in Austin, Texas, United States (Central (CT)). To call from abroad: +1 737 555-0123. It is an overlay, so all 10 digits are dialled.

StateTexas
Main areaAustin
Time zoneCentral (CT)
TypeOverlay
10-digit dialingRequired
In service since25-Apr-2000

The 737 area code is a geographic North American Numbering Plan (NANP) code covering Austin, Texas. It has been in service since 25-Apr-2000 and sits in the Central (CT) time zone.

Overlay 737 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

737512

How to dial a 737 number

From abroad+1 737 555-0123
Within the US / Canada1 737 555-0123
Locally (same area)737 555-0123

Cities in the 737 area code

A 737 number is usually in one of these places in Texas — 3 counties.

Austin Hays;Travis;WilliamsonCedar Park WilliamsonGeorgetown WilliamsonRound Rock WilliamsonSan Marcos Hays

Other Texas area codes

210214254281325346361409430432469512621682713726

Frequently asked questions

Where is the 737 area code?

The 737 area code is in Austin, Texas, United States (Central (CT)).

Is 737 an overlay area code?

Yes. 737 overlays the same region as 512, so callers dial all 10 digits.

Do I have to dial 10 digits for 737?

Yes — dial the area code plus the seven-digit number.

How do I call a 737 number from another country?

Dial your exit code (or +), then 1, then 737, then the number: +1 737 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 737 number does not pinpoint a street or ZIP code.

Missed a call from +1 737?

In the 30 days to September 24, 2026, 287 unwanted calls showing a 737 number were reported to the US Federal Trade Commission, 62% of them recorded messages or robocalls. That puts 737 at #294 of 670 area codes reported.

Other118
Reducing your debt (credit cards, mortgage, student loans)52
Dropped call or no message34
Calls pretending to be government, businesses, or family and friends34
Before you call back
  • If you do not know anyone in Texas, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 737 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 737 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 737:

Onvoy, LLC 81T-Mobile USA, Inc. 33New Cingular Wireless PCS, LLC 29Cellco Partnership Dba Verizon Wireless 28Fractel, LLC 26Bandwidth.Com CLEC, LLC 21

About 26.1% of the 345 prefixes in use belong to mobile carriers: a 737 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 737 — cities & rate centres