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Area code for San Antonio
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Key neighborhoods and districts
Prefix: 210
Tourism, hospitality, and business district
Prefix: 210
Major healthcare complex
Prefix: 210
Upscale residential and business area
Prefix: 210
Military installations and contractors
Prefix: 210
Growing business and residential area
San Antonio is the seventh-largest city in the United States and a major Texas economic hub. Known for the Alamo, the Riverwalk, and a strong military presence, San Antonio is important for military, healthcare, tourism, and cybersecurity industries. The city primarily uses area code 210, making it one of the few major US cities with a single area code.
Tourism, hospitality, government, and financial services
Format: +1 210 XXX XXXX
Hospitals, medical research, and healthcare businesses
Format: +1 210 XXX XXXX
Cybersecurity, aerospace, and defense contractors
Format: +1 210 XXX XXXX
University area with tech and professional services
Format: +1 210 XXX XXXX
San Antonio is in the Central Time Zone. Business hours are 8 AM - 5 PM. The city has a significant military presence, so government and defense work often starts early. Summer afternoons can be slow due to heat. The tourism industry is especially busy during Fiesta (April) and the holidays.
Step-by-step dialing instructions
Dial the full 10-digit number. 210 is the only area code for San Antonio proper, making dialing simpler.
210 covers all of San Antonio. Surrounding areas use 830 (Hill Country) and parts of 512 (Austin corridor).
All major carriers have good coverage. AT&T has a significant presence in Texas.
San Antonio combines Texas friendliness with a relaxed pace. Business is professional but warm. Military culture means punctuality is valued. Spanish is commonly spoken.
Example: +1 210 1234567
Common reasons people call this city
Connect with military bases, contractors, and defense companies
Reach major hospital systems and medical facilities
Contact hotels, attractions, and convention services
Connect with the growing cybersecurity industry
Key statistics and information
Population
Time Zone
Business Hours
Peak Times
Get answers to common questions
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