About Area Code 210
- Region Code
- 210
- City
- San Antonio
- State
- Texas
- Population
- 1,800,000
- Largest City
- San Antonio
- Neighboring Codes
- 830 (New Braunfels, Texas)
- Time Zone
- Central Time
Texas
(210) Area Code 210 — San Antonio, Texas
210 Area Code – San Antonio, Texas: Location, Time Zone & History
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Map of Area Code 210
Available Phone Numbers
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History & Cultural Notes
Area code 210 was created in 1992 when it split from area code 512, which had previously covered a much larger swath of south-central Texas. As San Antonio's population grew, the region required its own dedicated numbering resource, and 210 was assigned specifically to the San Antonio metropolitan area. In 2017, an overlay code, 726, was introduced to serve the same geographic footprint once 210 numbers approached exhaustion, meaning new lines in the area may carry either code.
San Antonio anchors a region with deep Spanish colonial and Mexican-American heritage, reflected in landmarks like the Alamo and the River Walk. The city's identity blends military tradition, historic missions, and a strong Tejano cultural presence, giving the region a distinct character within Texas.
- Military and defense, anchored by Joint Base San Antonio
- Healthcare and biosciences
- Tourism and hospitality
- Financial services and insurance
Beyond San Antonio proper, the code also serves nearby communities such as Alamo Heights, Universal City, and Converse, tying together a metropolitan region with a shared cultural and economic base.