WHAT YOU NEED TO KNOW
Area code 210 serves San Antonio and its surrounding communities in south-central Texas, including Leon Valley, Converse, and Universal City. Established in November 1992 as a split from area code 512, the code covers approximately 2.6 million residents in the greater San Antonio metro and is the primary local code for Bexar County.
- Population: approximately 2.6 million in the metro area
- Overlay: None as of 2024
- Dialing: 10-digit dialing required
- Source Type: Local geographic code
Geographic Coverage
Area code 210 covers the city of San Antonio and a collection of incorporated municipalities within Bexar County. These include Leon Valley, Converse, Universal City, Schertz, Selma, Live Oak, Windcrest, Balcones Heights, Kirby, Shavano Park, Grey Forest, Hill Country Village, Alamo Heights, and Terrell Hills. The coverage area is concentrated within Bexar County, making 210 one of the few major Texas area codes aligned closely with a single county boundary.
Population and Business Context
San Antonio is the second-most populous city in Texas and the seventh-largest in the United States, with a metro population near 2.6 million. The local economy is anchored by military installations including Joint Base San Antonio, as well as healthcare, tourism, manufacturing, and financial services. The city hosts major employers such as USAA, Valero Energy, and H-E-B, making area code 210 an active market for both consumer and business telecommunications.
Area Code History
Area code 210 was created on November 1, 1992, when it split from the original 512 area code, which had previously covered most of central and south Texas. The split was driven by rapid population growth and increasing telephone number demand in the San Antonio region. At the time of its creation, 210 became the sole area code serving San Antonio and Bexar County, a distinction it has maintained without an overlay being added.
How to Dial
All calls within area code 210 require 10-digit dialing, meaning you must dial the full area code plus the seven-digit local number even when calling within the same area code. There is no overlay code paired with 210, so all local numbers in the San Antonio metro share the single 210 prefix. Long-distance calls outside the 210 region require dialing 1 followed by the 10-digit number.
Need a 210 Number for Your San Antonio Business?
Businesses operating in San Antonio and the greater Bexar County area can provision a local 210 tracking number through Convirza. Whether you run a single location in downtown San Antonio or manage multiple service areas across the metro, Convirza provides trackable local numbers in any North American area code, including 210, so your business appears local to every caller. Every call to your 210 number is automatically scored, recorded, and attributed to the marketing source that drove it, using dynamic number insertion (DNI). Calls route to any team member, office, or device you specify. You get a full picture of which campaigns, ads, or channels are generating real phone leads in the San Antonio market.
750+ customers · 25 years of call data