737 Area CodeAustin, TX
Area code 737 covers Austin and 72 other cities in Texas: 2,322,934 people in 10 counties, led by Travis and Williamson, on Central Time (CT). It overlays 512.
Overview
- Major City
- Austin
- State
- Texas (TX)
- Timezone
- Central Time (CT)
- Current Time
- –:––
- Overlay
- Yes – shares area with 512
Where is area code 737?
Overview of the 737 Area Code
Geographic Coverage of the 737 Area Code
All 73 cities- 993,588
- 135,359
- 101,344
- 87,511
- 78,380
- 74,316
Austin Area Codes Overview
- 512Same territory
- 737This page
What cities does area code 737 cover?
| City | State | Population | Population in 737 | % of listed-city population | % of City |
|---|---|---|---|---|---|
| Austin | TX | 993,588 | 993,588 | 50.6% | 100.0% |
| Round Rock | TX | 135,359 | 135,359 | 6.9% | 100.0% |
| Georgetown | TX | 101,344 | 95,851 | 5.2% | 94.6% |
| Leander | TX | 87,511 | 87,511 | 4.5% | 100.0% |
| Cedar Park | TX | 78,380 | 78,380 | 4.0% | 100.0% |
| San Marcos | TX | 74,316 | 74,316 | 3.8% | 100.0% |
| Pflugerville | TX | 66,819 | 66,819 | 3.4% | 100.0% |
| Kyle | TX | 65,833 | 65,833 | 3.4% | 100.0% |
| Hutto | TX | 42,661 | 42,661 | 2.2% | 100.0% |
| Brushy Creek | TX | 21,764 | 21,764 | 1.1% | 100.0% |
| Manor | TX | 21,500 | 21,500 | 1.1% | 100.0% |
| Lakeway | TX | 19,056 | 19,056 | 1.0% | 100.0% |
| Taylor | TX | 17,872 | 17,872 | 0.9% | 100.0% |
| Lockhart | TX | 17,166 | 17,166 | 0.9% | 100.0% |
| Jollyville | TX | 16,151 | 16,151 | 0.8% | 100.0% |
| Buda | TX | 16,090 | 16,090 | 0.8% | 100.0% |
| Bastrop | TX | 12,720 | 12,720 | 0.6% | 100.0% |
| Elgin | TX | 12,438 | 12,438 | 0.6% | 100.0% |
| Wells Branch | TX | 12,120 | 12,120 | 0.6% | 100.0% |
| Liberty Hill | TX | 11,984 | 11,984 | 0.6% | 100.0% |
| Lago Vista | TX | 10,201 | 10,201 | 0.5% | 100.0% |
| Dripping Springs | TX | 10,165 | 10,165 | 0.5% | 100.0% |
| Bee Cave | TX | 8,510 | 8,510 | 0.4% | 100.0% |
| Lampasas | TX | 7,936 | 7,936 | 0.4% | 100.0% |
| Burnet | TX | 6,869 | 6,869 | 0.4% | 100.0% |
| Hornsby Bend | TX | 6,791 | 6,791 | 0.3% | 100.0% |
| Camp Swift | TX | 6,383 | 6,383 | 0.3% | 100.0% |
| Rockdale | TX | 5,637 | 5,637 | 0.3% | 100.0% |
| Jarrell | TX | 5,151 | 5,151 | 0.3% | 100.0% |
| Shady Hollow | TX | 5,004 | 5,004 | 0.3% | 100.0% |
| Lost Creek | TX | 4,509 | 4,509 | 0.2% | 100.0% |
| Redwood | TX | 4,338 | 4,338 | 0.2% | 100.0% |
| Smithville | TX | 4,335 | 4,335 | 0.2% | 100.0% |
| West Lake Hills | TX | 3,208 | 3,208 | 0.2% | 100.0% |
| Barton Creek | TX | 3,077 | 3,077 | 0.2% | 100.0% |
| Hudson Bend | TX | 2,981 | 2,981 | 0.2% | 100.0% |
| Wimberley | TX | 2,889 | 2,889 | 0.1% | 100.0% |
| Jonestown | TX | 2,615 | 2,615 | 0.1% | 100.0% |
| Wyldwood | TX | 2,505 | 2,505 | 0.1% | 100.0% |
| Circle D-KC Estates | TX | 2,393 | 2,393 | 0.1% | 100.0% |
| Briarcliff | TX | 2,387 | 2,387 | 0.1% | 100.0% |
| The Hills | TX | 2,342 | 2,342 | 0.1% | 100.0% |
| Bertram | TX | 2,020 | 2,020 | 0.1% | 100.0% |
| Woodcreek | TX | 1,886 | 1,886 | 0.1% | 100.0% |
| Uhland | TX | 1,885 | 1,885 | 0.1% | 100.0% |
| Garfield | TX | 1,698 | 1,698 | 0.1% | 100.0% |
| Serenada | TX | 1,641 | 1,641 | 0.1% | 100.0% |
| Buchanan Dam | TX | 1,519 | 1,519 | 0.1% | 100.0% |
| Rollingwood | TX | 1,438 | 1,438 | 0.1% | 100.0% |
| Thorndale | TX | 1,388 | 1,388 | 0.1% | 100.0% |
| Martindale | TX | 1,266 | 1,266 | 0.1% | 100.0% |
| Point Venture | TX | 1,243 | 1,243 | 0.1% | 100.0% |
| Granger | TX | 1,209 | 1,209 | 0.1% | 100.0% |
| Manchaca | TX | 1,133 | 1,133 | 0.1% | 100.0% |
| Windemere | TX | 1,037 | 1,037 | 0.1% | 100.0% |
| Geronimo | TX | 1,032 | 0 | 0.1% | 0.0% |
| Mustang Ridge | TX | 1,002 | 1,002 | 0.1% | 100.0% |
| Thrall | TX | 873 | 873 | 0.0% | 100.0% |
| Lometa | TX | 801 | 801 | 0.0% | 100.0% |
| Weir | TX | 770 | 770 | 0.0% | 100.0% |
| Niederwald | TX | 720 | 720 | 0.0% | 100.0% |
| McDade | TX | 685 | 685 | 0.0% | 100.0% |
| Mountain City | TX | 676 | 676 | 0.0% | 100.0% |
| Sunset Valley | TX | 617 | 617 | 0.0% | 100.0% |
| Volente | TX | 522 | 522 | 0.0% | 100.0% |
| San Leanna | TX | 517 | 517 | 0.0% | 100.0% |
| Webberville | TX | 472 | 472 | 0.0% | 100.0% |
| Bear Creek | TX | 461 | 461 | 0.0% | 100.0% |
| Milano | TX | 432 | 432 | 0.0% | 100.0% |
| Creedmoor | TX | 423 | 423 | 0.0% | 100.0% |
| Hays | TX | 264 | 264 | 0.0% | 100.0% |
| Staples | TX | 190 | 190 | 0.0% | 100.0% |
| Driftwood | TX | 144 | 144 | 0.0% | 100.0% |
City population is shown in full; each city's share inside 737 is measured from Census tract centroids.
What counties does area code 737 cover?
| County | State | Population in 737 | % of area-code footprint | % of County |
|---|---|---|---|---|
| Travis County | TX | 1,290,188 | 56% | 100% |
| Williamson County | TX | 596,699 | 26% | 98% |
| Hays County | TX | 241,067 | 10% | 100% |
| Bastrop County | TX | 97,216 | 4% | 100% |
| Caldwell County | TX | 37,224 | 2% | 81% |
| Burnet County | TX | 23,944 | 1% | 49% |
| Milam County | TX | 15,617 | 1% | 63% |
| Lampasas County | TX | 14,374 | 1% | 66% |
| Guadalupe County | TX | 4,823 | 0% | 3% |
| Llano County | TX | 1,782 | 0% | 8% |
Sources:
- Census PEP Vintage 2024 (city populations)
- · 2020 Census tract centroids with NANP and TIGERweb boundaries (footprint, counties, city shares)
- · NANPA NPA and CO Code reports (dates, prefixes)
- · Methodology
Has area code 737 been reported for unwanted calls?
Yes – 1,064 FTC complaints, May 29 – Oct 1, 2026.
- 61% robocalls
- ↑ 15% vs prior period
- FTC data, retrieved 2026-10-05
Most-reported subjects
- Other43%454
- Reducing your debt (credit cards, mortgage, student loans)16%172
- Calls pretending to be government, businesses, or family and friends12%132
Caller ID is easily spoofed, so these figures reflect the number shown on caller ID, not the caller's true location – an area code alone never identifies a caller. The FTC does not verify the facts in these complaints.
Which prefixes and exchanges belong to area code 737?
25% assigned to a telco
- 77% Landline
- 23% Wireless
- 0% Unknown
of 252 | ||
| Prefix | Usage | Carrier |
|---|---|---|
| (737)200- | Landline | Onvoy |
| (737)201- | Landline | Onvoy |
| (737)202- | Landline | Level 3 Communications |
| (737)203- | Landline | Mcimetro Access Transmission Services |
| (737)204- | Landline | Onvoy |
| (737)205- | Landline | Onvoy |
| (737)206- | Wireless | T-Mobile Usa |
| (737)207- | Landline | Teleport Communications America |
| (737)208- | Wireless | Verizon Wireless |
| (737)209- | Landline | Time Warner Cbl |
| (737)210- | Landline | Onvoy |
| (737)212- | Landline | Time Warner Cbl |
| (737)213- | Wireless | Verizon Wireless |
| (737)214- | Landline | Onvoy |
| (737)215- | Wireless | Verizon Wireless |
| (737)216- | Landline | Bandwidth.Com Clec |
| (737)217- | Wireless | T-Mobile Usa |
| (737)218- | Landline | Airus |
| (737)219- | Landline | Teleport Communications America |
| (737)220- | Landline | Vonage America |
| (737)221- | Wireless | T-Mobile Usa |
| (737)222- | Landline | Foremost Telecommunications |
| (737)223- | Landline | Teleport Communications America |
| (737)224- | Landline | Austin Bestline |
| (737)225- | Landline | Metropcs |
| (737)226- | Wireless | Verizon Wireless |
| (737)227- | Landline | Centurylink Communications |
| (737)228- | Wireless | New Cingular Wireless Pcs |
| (737)229- | Landline | Teleport Communications America |
| (737)230- | Wireless | New Cingular Wireless Pcs |
| (737)231- | Landline | Bandwidth.Com Clec |
| (737)232- | Wireless | T-Mobile Usa |
| (737)233- | Wireless | Verizon Wireless |
| (737)234- | Landline | Bandwidth.Com Clec |
| (737)235- | Wireless | Verizon Wireless |
| (737)236- | Landline | Bandwidth.Com Clec |
| (737)237- | Landline | Onvoy |
| (737)238- | Landline | Bandwidth.Com Clec |
| (737)239- | Landline | Voip Innovations |
| (737)240- | Wireless | Verizon Wireless |
| (737)241- | Landline | Onvoy |
| (737)242- | Landline | Bandwidth.Com Clec |
| (737)243- | Landline | Airus |
| (737)244- | Landline | Bandwidth.Com Clec |
| (737)245- | Landline | Onvoy |
| (737)246- | Landline | Airespring |
| (737)247- | Landline | Onvoy |
| (737)248- | Landline | Mcimetro Access Transmission Services |
| (737)249- | Landline | Ip Global Networks |
| (737)250- | Landline | Onvoy |
| (737)251- | Landline | Peerless Network Of Texas |
| (737)252- | Landline | Peerless Network Of Texas |
| (737)253- | Landline | Vonage America |
| (737)255- | Landline | Exiant Communications |
| (737)256- | Wireless | Verizon Wireless |
| (737)257- | Landline | Bandwidth.Com Clec |
| (737)258- | Landline | Teleport Communications America |
| (737)259- | Landline | Level 3 Communications |
| (737)260- | Landline | Onvoy |
| (737)261- | Landline | Teleport Communications America |
| (737)262- | Wireless | Verizon Wireless |
| (737)263- | Wireless | New Cingular Wireless Pcs |
| (737)264- | Landline | Metropcs |
| (737)265- | Wireless | New Cingular Wireless Pcs |
| (737)266- | Landline | Level 3 Communications |
| (737)267- | Wireless | New Cingular Wireless Pcs |
| (737)268- | Wireless | Verizon Wireless |
| (737)269- | Landline | Teleport Communications America |
| (737)270- | Landline | Nuso |
| (737)271- | Landline | Onvoy |
| (737)272- | Landline | Teleport Communications America |
| (737)273- | Landline | Onvoy |
| (737)274- | Wireless | T-Mobile Usa |
| (737)275- | Landline | Bandwidth.Com Clec |
| (737)276- | Wireless | New Cingular Wireless Pcs |
| (737)277- | Landline | Onvoy |
| (737)278- | Wireless | Verizon Wireless |
| (737)279- | Wireless | Verizon Wireless |
| (737)280- | Wireless | New Cingular Wireless Pcs |
| (737)281- | Landline | Ip Horizon |
| (737)282- | Landline | Onvoy |
| (737)283- | Landline | Onvoy |
| (737)284- | Landline | Onvoy |
| (737)285- | Landline | Whitesky Communications |
| (737)286- | Landline | Whitesky Communications |
| (737)287- | Wireless | T-Mobile Usa |
| (737)288- | Landline | Fractel |
| (737)289- | Landline | Teleport Communications America |
| (737)290- | Landline | Bandwidth.Com Clec |
| (737)291- | Wireless | New Cingular Wireless Pcs |
| (737)292- | Landline | Onvoy |
| (737)293- | Wireless | T-Mobile Usa |
| (737)294- | Wireless | T-Mobile Usa |
| (737)295- | Landline | Onvoy |
| (737)296- | Wireless | T-Mobile Usa |
| (737)297- | Wireless | T-Mobile Usa |
| (737)298- | Wireless | T-Mobile Usa |
| (737)299- | Landline | Onvoy |
| (737)300- | Landline | Onvoy |
| (737)301- | Landline | Wavenation |
| (737)302- | Landline | Metropcs |
| (737)303- | Landline | Skyetel |
| (737)304- | Landline | Onvoy Spectrum |
| (737)305- | Wireless | New Cingular Wireless Pcs |
| (737)306- | Wireless | New Cingular Wireless Pcs |
| (737)307- | Landline | Onvoy |
| (737)308- | Wireless | Verizon Wireless |
| (737)309- | Landline | Callworks |
| (737)310- | Landline | Hd Carrier |
| (737)312- | Landline | Onvoy |
| (737)313- | Wireless | Dish Wireless |
| (737)314- | Wireless | Verizon Wireless |
| (737)315- | Wireless | Dish Wireless |
| (737)317- | Landline | Onvoy |
| (737)318- | Wireless | T-Mobile Usa |
| (737)319- | Landline | Teleport Communications America |
| (737)320- | Landline | Caprock Telecommunications |
| (737)321- | Wireless | T-Mobile Usa |
| (737)322- | Landline | Bandwidth.Com Clec |
| (737)323- | Wireless | T-Mobile Usa |
| (737)324- | Wireless | T-Mobile Usa |
| (737)326- | Wireless | T-Mobile Usa |
| (737)327- | Landline | Onvoy |
| (737)328- | Wireless | T-Mobile Usa |
| (737)329- | Wireless | Verizon Wireless |
| (737)330- | Wireless | New Cingular Wireless Pcs |
| (737)331- | Landline | Bandwidth.Com Clec |
| (737)332- | Landline | Onvoy |
| (737)333- | Landline | Foremost Telecommunications |
| (737)334- | Landline | Bandwidth.Com Clec |
| (737)335- | Wireless | T-Mobile Usa |
| (737)336- | Landline | Fractel |
| (737)337- | Landline | Twilio International |
| (737)338- | Landline | Onvoy |
| (737)339- | Landline | Bandwidth.Com Clec |
| (737)340- | Wireless | T-Mobile Usa |
| (737)341- | Wireless | T-Mobile Usa |
| (737)342- | Wireless | T-Mobile Usa |
| (737)343- | Wireless | Verizon Wireless |
| (737)344- | Landline | Radiantiq |
| (737)345- | Landline | Fractel |
| (737)346- | Landline | Austin Bestline |
| (737)347- | Landline | Cebridge Telecom Tx |
| (737)348- | Landline | Fractel |
| (737)349- | Wireless | Verizon Wireless |
| (737)350- | Landline | Nuso |
| (737)351- | Wireless | New Cingular Wireless Pcs |
| (737)352- | Wireless | Verizon Wireless |
| (737)353- | Landline | Level 3 Communications |
| (737)354- | Landline | Nuso |
| (737)355- | Landline | Bandwidth.Com Clec |
| (737)356- | Landline | Fractel |
| (737)357- | Landline | Onvoy Spectrum |
| (737)358- | Landline | Comcast Ip Phone |
| (737)366- | Landline | Onvoy |
| (737)372- | Landline | Twilio International |
| (737)373- | Landline | Fractel |
| (737)375- | Landline | Onvoy Spectrum |
| (737)377- | Landline | Fractel |
| (737)378- | Landline | Ton80 Communications |
| (737)386- | Landline | Fractel |
| (737)387- | Landline | Onvoy |
| (737)400- | Landline | Onvoy |
| (737)401- | Landline | Teleport Communications America |
| (737)402- | Landline | Telnyx |
| (737)404- | Landline | Time Warner Cbl |
| (737)414- | Wireless | T-Mobile Usa |
| (737)420- | Landline | Commio |
| (737)427- | Landline | Onvoy |
| (737)437- | Landline | Twilio International |
| (737)443- | Landline | Local Access |
| (737)444- | Landline | Foremost Telecommunications |
| (737)465- | Landline | Fractel |
| (737)471- | Landline | Southwestern Bell |
| (737)473- | Landline | Onvoy |
| (737)477- | Landline | Fractel |
| (737)484- | Landline | Mcimetro Access Transmission Services |
| (737)497- | Landline | Onvoy |
| (737)500- | Landline | Onvoy |
| (737)510- | Landline | Onvoy |
| (737)520- | Landline | Onvoy |
| (737)529- | Landline | Onvoy |
| (737)530- | Landline | Onvoy |
| (737)537- | Landline | Twilio International |
| (737)577- | Landline | Fractel |
| (737)587- | Landline | Fractel |
| (737)600- | Landline | Onvoy |
| (737)610- | Landline | Onvoy |
| (737)615- | Landline | Onvoy |
| (737)618- | Wireless | T-Mobile Usa |
| (737)637- | Landline | Onvoy |
| (737)666- | Landline | Foremost Telecommunications |
| (737)667- | Landline | Fractel |
| (737)677- | Landline | Onvoy |
| (737)678- | Landline | Ton80 Communications |
| (737)688- | Landline | Fractel |
| (737)701- | Wireless | New Cingular Wireless Pcs |
| (737)702- | Landline | Bandwidth.Com Clec |
| (737)703- | Landline | Onvoy |
| (737)704- | Landline | Grande Communications Networks |
| (737)707- | Landline | Skyetel |
| (737)708- | Landline | Metropcs |
| (737)710- | Landline | Onvoy Spectrum |
| (737)717- | Landline | Onvoy |
| (737)727- | Landline | Onvoy |
| (737)732- | Landline | Fractel |
| (737)733- | Landline | Fractel |
| (737)734- | Landline | Twilio International |
| (737)737- | Landline | Usfon |
| (737)738- | Landline | Onvoy |
| (737)742- | Landline | Ton80 Communications |
| (737)746- | Landline | Ton80 Communications |
| (737)747- | Landline | Metropcs |
| (737)757- | Landline | Bandwidth.Com Clec |
| (737)758- | Landline | Fractel |
| (737)762- | Landline | Ton80 Communications |
| (737)766- | Landline | Fractel |
| (737)767- | Landline | Ton80 Communications |
| (737)770- | Landline | Invoxio Incorporated |
| (737)773- | Landline | Twilio International |
| (737)777- | Landline | Foremost Telecommunications |
| (737)781- | Wireless | Verizon Wireless |
| (737)786- | Landline | Fractel |
| (737)787- | Landline | Hd Carrier |
| (737)788- | Landline | Fractel |
| (737)799- | Landline | Fractel |
| (737)800- | Landline | Onvoy |
| (737)802- | Wireless | Verizon Wireless |
| (737)808- | Landline | Bandwidth.Com Clec |
| (737)825- | Landline | Ton80 Communications |
| (737)828- | Landline | Ton80 Communications |
| (737)837- | Landline | Onvoy |
| (737)842- | Landline | Fractel |
| (737)843- | Landline | Mcimetro Access Transmission Services |
| (737)864- | Landline | Ton80 Communications |
| (737)867- | Landline | Commio |
| (737)877- | Landline | Fractel |
| (737)881- | Wireless | New Cingular Wireless Pcs |
| (737)888- | Landline | Foremost Telecommunications |
| (737)895- | Landline | Twilio International |
| (737)899- | Landline | Fractel |
| (737)900- | Landline | Terra Nova Telecom |
| (737)910- | Landline | Radiantiq |
| (737)931- | Landline | Tpx Communications |
| (737)932- | Landline | Onvoy |
| (737)937- | Landline | Onvoy |
| (737)946- | Landline | Fractel |
| (737)973- | Landline | Bandwidth.Com Clec |
| (737)977- | Landline | Fractel |
| (737)980- | Landline | Invoxio Incorporated |
| (737)990- | Landline | Invoxio Incorporated |
| (737)999- | Landline | Foremost Telecommunications |
| No prefixes match “”. | ||
Frequently Asked Questions about the 737 Area Code
Who called me from a 737 number?
23% of its assigned prefixes are wireless. Largest holders: Onvoy, Fractel, and T-Mobile Usa.
Is 737 a scam area code?
Carriers hold 25% of its possible prefixes.
Why do I keep getting calls from the 737 area code?
Complaints rose 15% on the prior period.
Should I answer an unknown 737 number?
61% of its FTC complaints were robocalls. Its most-reported specific subject was "Reducing your debt (credit cards, mortgage, student loans)", at 16%.
How do I block calls from the 737 area code?
Blocking 737 still lets 512 numbers through.
Where is area code 737?
737 covers 73 cities and 2,322,934 residents in 10 Texas counties, led by Travis, Williamson, and Hays.
When did area code 737 go into service?
737 went into service on July 1, 2013. It was added to overlay 512.
Is 737 a real area code?
Yes: 45 carriers hold its prefixes, serving 73 cities in Travis, Williamson, Hays, and 7 other counties.
What timezone is the 737 area code in?
737 is on Central Time (CT).
How do I call a 737 number from abroad?
Dial +1 737, then the number.