business phone · 8 min read
Area Code for San Antonio
San Antonio uses area codes 210 (since 1992) and 726 overlay (2017). Full guide to neighborhoods, history, scam alerts, and getting a local SA business number.
San Antonio runs on two area codes: 210 — created in 1992 when it carved out of the massive original 512 territory — and 726, the overlay added in 2017 to keep pace with one of America’s fastest-growing cities.
Whether you’re verifying an SA number, setting up a local business line for the Alamo City market, or tracing why a Hill Country contact has a different prefix than your downtown San Antonio colleague, this guide covers every angle.
What’s the area code for San Antonio?
San Antonio, Texas is served by two area codes operating as a full overlay pair under the North American Numbering Plan (NANP):
| Code | Established | Coverage | Notes |
|---|---|---|---|
| 210 | November 1, 1992 | Bexar County + parts of Atascosa, Comal, Guadalupe, Medina, Wilson counties | Split from 512; San Antonio’s cultural identity number |
| 726 | October 23, 2017 | Same territory as 210 (full overlay) | Introduced to prevent 210 exhaustion; 726 = “SAN” on keypad |
Both codes share identical geography — there is no part of San Antonio served exclusively by 210 or exclusively by 726. All local calls within the service area require ten-digit dialing, mandatory since October 2017.
San Antonio sits in the Central Time Zone (CT) — UTC−6 in winter, UTC−5 during Daylight Saving Time.
For regional context: neighboring Hill Country (Boerne, Fredericksburg, New Braunfels) uses 830, Austin uses 512/737, and the Rio Grande Valley uses 956.
San Antonio metro area codes by neighborhood
Because 210 and 726 are a true overlay, both codes appear across every San Antonio neighborhood. The geographic breakdown below describes what communities fall within the 210/726 service territory.
Downtown and central San Antonio
The historic urban core falls entirely within Bexar County and the 210/726 territory.
- Downtown / Alamo — the Alamo, Convention Center, financial district
- River Walk (Paseo del Río) — tourist and restaurant corridor along the San Antonio River
- King William Historic District — Victorian-era neighborhood south of downtown
- Southtown / South Alamo — arts district, galleries, Pearl District adjacency
- Pearl District — redeveloped brewery campus; restaurants, market, hotel
North Side and Stone Oak
The North Side is San Antonio’s fastest-growing residential and commercial corridor.
- Stone Oak — upscale master-planned community; major medical and office corridor
- The Dominion — luxury residential enclave; Valero Energy campus nearby
- Medical Center — South Texas Medical Center, the largest medical complex in the region
- Northwest Side — suburban residential growth along US-281 and Loop 1604
Established neighborhoods and inner suburbs
- Alamo Heights — independent municipality within Bexar County; 210 service area
- Terrell Hills — small enclave city; 210
- Castle Hills — northwest enclave city; 210
- Converse — northeast suburb; 210/726
- Universal City — near Randolph Air Force Base; 210/726
- Windcrest — Rackspace Technology HQ; 210/726
South Side and far reaches
- South Side — Southside ISD area; large Hispanic-majority residential community
- Leon Valley — west of Loop 410; 210/726
- Helotes — suburban western edge of Bexar County; 210/726
- Live Oak — northeast suburb near Fort Sam Houston; 210/726
Outside 210/726 — Hill Country and beyond
- Boerne — 30 min northwest on I-10; area code 830
- New Braunfels — 30 min northeast on I-35; area code 830
- Fredericksburg — Texas Hill Country wine country; area code 830
- Seguin — Guadalupe County seat, east of SA; area code 830
- Austin metro — area code 512/737 (512 created 1947; retained over San Antonio in 1992)
- Rio Grande Valley — Laredo, McAllen, Brownsville; area code 956
History of San Antonio area codes
San Antonio’s area code story runs from a single giant Texas territory to a carefully layered pair of codes protecting one of America’s most culturally distinctive cities.
1947 — 512 covers all of south-central Texas. When AT&T engineers created the North American Numbering Plan (NANP), area code 512 covered a massive swath: Austin, San Antonio, Corpus Christi, Brownsville, McAllen, and the Hill Country all shared one code. Population was manageable; the territory was enormous.
November 1, 1992 — 210 is born. By the early 1990s, fax machines, pagers, and data lines were exhausting 512’s number pool. The PUCT ordered a split. San Antonio and its surrounding territory became area code 210. Notably, Austin kept 512 even though San Antonio was the larger city — regulators decided it was less disruptive for San Antonio to adopt a new code than to force Texas state government agencies and hundreds of Austin-based institutions to change their published numbers.
July 7, 1997 — 830 splits off the Hill Country. As 210 in turn began to fill, the PUCT carved out another slice. Area code 830 was assigned to the Hill Country and most suburbs outside Bexar County — Kerrville, Fredericksburg, New Braunfels, Del Rio, and Seguin. Simultaneously, the Rio Grande Valley became area code 956. After these splits, 210 was reduced to Bexar County and a few surrounding county fragments.
2015–2017 — 726 overlay is planned and launched. San Antonio’s population growth — it was the third-fastest-growing US city in 2015–2016 — was burning through 210 numbers faster than expected. NANPA projected exhaustion by mid-2018. The PUCT approved a full overlay in 2015, and the new code was announced as 726 in August 2016 — chosen specifically because 726 spells “SAN” on the alphanumeric keypad. After a permissive dialing period, 726 went fully mandatory on October 23, 2017.
Sources: NANPA, FCC, PUCT overlay proceeding records.
210 as San Antonio’s identity — the Alamo City’s area code
Few American area codes carry as much cultural weight as 210 does for San Antonio.
The Alamo and River Walk. San Antonio is the most-visited city in Texas. The Alamo — site of the 1836 Battle of the Alamo — draws over 1.5 million visitors annually. The River Walk (Paseo del Río) hosts dozens of restaurants and hotels along a 15-mile waterway. Every business on that corridor has a 210 number.
Military capital of the United States. Joint Base San Antonio (JBSA) is the US military’s largest joint base, encompassing Lackland Air Force Base, Fort Sam Houston, and Randolph Air Force Base. JBSA supports over 80,000 military and civilian personnel. The military community is deeply embedded in 210.
Fortune 500 and major corporate HQs. USAA (financial services), Valero Energy (Fortune 10 refiner), HEB (major grocery chain), and Frost Bank all maintain global or national headquarters within 210 territory. Rackspace Technology — a global managed cloud provider — is headquartered in Windcrest, a 210 enclave.
The Spurs and Fiesta. The San Antonio Spurs are one of the NBA’s most storied franchises — five-time champions with a 210 area code embedded in the fan identity. Fiesta San Antonio, the annual 11-day festival with over 100 events, draws 3.5 million people each year.
Hispanic culture and Tejano music. San Antonio is one of the largest Hispanic-majority cities in the United States. Tejano music — a blend of Mexican and American musical styles — was born in South Texas, and San Antonio is its capital. The 210 area code is the phone identity of this bilingual, bicultural community.
When the 726 overlay arrived, the San Antonio Report quoted a local: “210 is really a brand for San Antonio.” That brand endures.
San Antonio area code spam and scams
The 210 area code is among the most spoofed in Texas. Scammers fake a local 210 or 726 caller ID to exploit the likelihood that San Antonio residents will answer a local-looking call.
CPS Energy utility shutoff scams. The most common San Antonio-specific scam: callers spoofing CPS Energy’s number (210-353-2222) threaten immediate electricity shutoff unless payment is made immediately by gift card or wire transfer.
CPS Energy confirmed: “Representatives will never call to demand payments or threaten customers with same-day disconnection.” If you receive such a call, hang up and dial 210-353-2222 directly.
IRS impersonation — bilingual. Because San Antonio has a large Spanish-speaking population, IRS impersonation scams often run in both English and Spanish, claiming a tax debt with a fabricated Tax ID number. The IRS never initiates contact by phone.
Fake VA and Medicare calls targeting military retirees. With over 80,000 military and civilian personnel at JBSA, San Antonio has one of the largest military retiree populations in the country. Scammers target this community with fake VA benefit enrollment calls and Medicare plan switch offers — often spoofed from 210 numbers.
Immigration fraud calls in Spanish. Callers impersonating ICE or immigration attorneys demand fees to prevent deportation or expedite visa processing. These calls frequently arrive in Spanish and target undocumented residents who may be less likely to report them.
STIR/SHAKEN and call authentication. The FCC-mandated STIR/SHAKEN framework requires carriers to authenticate outbound calls with an attestation level: A (fully verified), B (partial), or C (gateway/unverified). Spoofed scam calls receive C-attestation or none, triggering “Spam Likely” labels on iPhones and Android.
When you get a San Antonio 210 or 726 number through DialPhone, outbound calls carry A-attestation — calls reach customers verified, not flagged.
See the FCC’s full guidance: fcc.gov/consumers/guides/spoofing-and-caller-id.
How to get a San Antonio business phone number
Getting a 210 or 726 number for your business takes under 10 minutes through a cloud VoIP provider. No Texas office required.
Step 1: Choose 210 or 726. For San Antonio brand recognition, 210 is the preferred choice. Inventory is limited — check availability first. 726 is functionally identical and easier to source; it also carries the memorable SAN keypad association.
Step 2: Sign up with a VoIP provider. DialPhone lets you search available San Antonio numbers by area code during signup. Both 210 and 726 numbers are available on all plans.
Step 3: Assign the number to users or a team. Route your San Antonio number to a mobile, desktop app, or team queue. Configure a voicemail greeting, call routing menu, or AI receptionist — including bilingual EN/ES greetings for San Antonio’s Hispanic-majority market.
Step 4: Configure outbound caller ID. Set your San Antonio number as the outbound caller ID so calls display the local 210 or 726 number — not an 800 number or personal cell.
Step 5: Port existing numbers if needed. If you already have a San Antonio number with another carrier, bring it to DialPhone through number porting — typically 2–5 business days for US local numbers.
See DialPhone pricing for plan details, or start a free trial to claim your San Antonio number today.
For the full porting walkthrough, see our number porting guide.
Famous companies in San Antonio area codes
San Antonio’s 210/726 territory is home to a remarkable concentration of Fortune 500 companies and nationally recognized brands.
USAA — United Services Automobile Association; financial services giant serving military members and families. Global HQ in northwest San Antonio; 210. One of the largest US private companies by revenue.
Valero Energy — Fortune 10 petroleum refiner and retailer; global HQ in San Antonio; 210. One of the largest refiners in the world.
HEB — Texas’s dominant grocery chain; privately held; global HQ in San Antonio; 210. Consistently ranked among the best US grocery chains.
Frost Bank — Texas-focused commercial bank; HQ in downtown San Antonio; 210. One of the oldest continuously operating banks in Texas.
Rackspace Technology — global managed cloud and hosting provider; HQ in Windcrest (a 210 enclave city). A pioneer of the cloud computing industry.
NuStar Energy — pipeline and terminal company; HQ in San Antonio; 210.
iHeartMedia — formerly Clear Channel Communications; the world’s largest outdoor advertising and radio network traces its roots to San Antonio; 210.
Bill Miller Bar-B-Q — iconic San Antonio fast-casual chain with 75+ locations across Texas; 210. A genuine SA institution since 1950.
Texas’s industry mix — Energy, Healthcare, Military contracting, and Tourism alongside Financial Services — means a 210 or 726 number signals credibility across a wide range of B2B sectors. DialPhone’s STIR/SHAKEN A-attestation and bilingual EN/ES AI receptionist ensure your San Antonio number reaches these businesses verified and answered.
San Antonio area code FAQ
San Antonio area code FAQ
What is the area code for San Antonio, Texas?
San Antonio, Texas uses two area codes: 210 and 726. Area code 210 is the original code, created on November 1, 1992, when it split from the 512 area code that previously covered most of south-central Texas.
Area code 726 is a full overlay introduced in October 2017 to prevent 210 from reaching number exhaustion. Both codes cover the same Bexar County geography — there is no neighborhood split between them. All local calls require ten-digit dialing since October 2017.
Is San Antonio still 'the 210'?
Yes — culturally, San Antonio is still 'the 210.' Local residents, businesses, and institutions prize a 210 number as a badge of authenticity. As one San Antonio resident noted when 726 was announced: 'the 210 area code has become such a part of the San Antonio identity that it will take some time for the addition of a new area code to change that.'
If you want a 210 number specifically, check availability with a VoIP provider. New numbers assigned today are often 726 — functionally identical, but without the legacy identity.
What is the difference between 210 and 726?
The difference is historical, not geographic. Both 210 and 726 cover the same territory — Bexar County and small portions of Atascosa, Comal, Guadalupe, Medina, and Wilson counties. There is no neighborhood that belongs exclusively to one code.
210 carries cultural weight: it's the 'old San Antonio' number tied to the Alamo, the Spurs, USAA, and HEB. 726 is newer and neutral — it works identically but lacks legacy identity. Notably, 726 spells 'SAN' on a phone keypad, a deliberate branding choice by regulators.
What cities are in the 210 area code?
Major cities in the 210 (and 726) area code include: San Antonio, Alamo Heights, Castle Hills, Converse, Leon Valley, Live Oak, Schertz, Universal City, and Windcrest — all primarily within Bexar County.
Small portions of neighboring counties also fall within 210/726 territory: Atascosa, Comal, Guadalupe, Medina, and Wilson counties. For Hill Country communities like Boerne, Fredericksburg, New Braunfels, and Kerrville — those use area code 830.
When did San Antonio get the 726 area code?
Area code 726 was announced in August 2016 and activated on October 23, 2017. The Public Utility Commission of Texas (PUCT) ordered the overlay because NANPA projected that 210 would reach number exhaustion by mid-2018, driven by San Antonio's rapid population growth.
A permissive dialing period ran until September 23, 2017. From October 23, 2017 onward, all calls within the 210/726 territory require ten-digit dialing. The code 726 was chosen deliberately — it spells 'SAN' on the alphanumeric keypad.
Are 210 calls spam?
Not inherently — 210 is a legitimate San Antonio area code. The concern is spoofing: scammers fake a local 210 caller ID to increase the chance residents will answer. Common San Antonio-specific scams include fake CPS Energy utility shutoff calls, IRS impersonation in English and Spanish, fake VA Medicare offers targeting military retirees, and immigration fraud calls.
STIR/SHAKEN is the FCC-mandated framework that combats spoofing. When you get a San Antonio number through DialPhone, outbound calls carry A-attestation — the highest trust level — so your calls reach customers as verified, not flagged as 'Spam Likely.'
Can I get a San Antonio 210 number without a Texas office?
Yes. Virtual (VoIP) phone numbers are not tied to a physical location. A business anywhere in the US — or internationally — can get a 210 or 726 number through a cloud phone provider and route calls to any device.
DialPhone assigns available San Antonio numbers in minutes. No Texas office, no hardware, no long-term contract. Outbound calls display the San Antonio caller ID, and the number rings on your mobile, desktop app, or team queue wherever your team is located.
What area code is the Hill Country (Boerne, Fredericksburg, New Braunfels)?
The Texas Hill Country — including Boerne, Fredericksburg, Kerrville, New Braunfels, and Seguin — uses area code 830.
Area code 830 was created on July 7, 1997, in a split from area code 210. It completely surrounds 210 and 726, making San Antonio's area codes a geographic enclave within the 830 territory. If you're calling a Hill Country business and it has a 830 number, that is correct — not a different city.
What is STIR/SHAKEN and why does it matter for San Antonio businesses?
STIR/SHAKEN is the FCC-mandated call authentication framework that requires carriers to sign outbound calls with an attestation level: A (fully verified), B (partial), or C (gateway/unverified). Spoofed scam calls receive C-attestation or none, triggering 'Spam Likely' labels on iPhones and Android.
For San Antonio businesses, A-attestation is critical because the 210 code is frequently spoofed for scams. DialPhone's STIR/SHAKEN A-attestation means your 210 or 726 outbound calls reach customers as verified — protecting your brand and your answer rate.
Get a San Antonio business number
A verified 210 or 726 number builds immediate local trust — whether you’re a national company entering the Alamo City market or a local business that needs its calls answered rather than screened as spam.
DialPhone provides San Antonio numbers with STIR/SHAKEN A-attestation, bilingual AI receptionist (EN/ES), call recording, and SMS — on a single plan with no hardware.
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About the author
Growth Operations Lead at DialPhone
Darshan leads Growth Operations at DialPhone, where he owns three interconnected programs: the comparison content operation, the open VoIP Pricing Dataset, and the test-call methodology used to verify every pricing claim published on the site.
His research process starts with hands-on product trials and live vendor quotes — not marketing pages. Pricing figures are cross-checked against actual invoices and re-verified on a rolling quarterly cycle, with the underlying dataset kept public for independent re-verification. That dataset now covers 40+ VoIP and virtual-number providers across the US and Canada market.
Darshan also leads DialPhone's AI receptionist evaluation program, running structured test-call scenarios across English, Spanish, and French to assess transcription accuracy, intent routing, and escalation behavior. Methodology notes and raw scoring are archived in the research section.
For factual corrections or dataset discrepancies, Darshan can be reached at the DialPhone editorial address. Verified corrections are published as errata with a changelog date — no silent edits.