area codes in san antonio texas

Fri, 08 May 2026 21:57:14 +0000

Understanding Area Codes in San Antonio, Texas: Your Complete Guide San Antonio, Texas — one of the largest and most vibrant cities in the state — isn’t just known for its rich history, stunning architecture, and thriving cultural scene, but also for its unique communications infrastructure. A key part of that infrastructure is the area code system. Whether you're moving to San Antonio, starting a business, or just curious about how dialing works here, understanding the area codes is essential. This guide explores everything you need to know about area codes in San Antonio, Texas. ### What Are Area Codes? Area codes are three-digit numbers assigned by the North American Numbering Plan (NANP) to divide large telephone service regions into manageable zones. In San Antonio, the primary area code is 210 — but as the city continues to grow, additional codes have been introduced to maintain coverage and service reliability.