210 Area Code
San Antonio, Texas
Area code 210 is located in San Antonio, Texas. It covers San Antonio, Converse, and surrounding areas in the Central time zone (UTC-6). Administered by NANPA.
Where is area code 210?
Area code 210 is located in San Antonio, Texas. It covers San Antonio, Converse, and surrounding areas in the Central time zone (UTC-6).
Area code 210 is overlaid by area code 726. Both codes serve the same geographic region and require 10-digit dialing for local calls.
Cities Covered by Area Code 210
Area code 210 primarily serves the San Antonio area of Texas. The exact coverage includes San Antonio, Converse, and Universal City, along with surrounding communities and suburbs.
Time Zone
Central Time — UTC-6
Area code 210 operates in the Central Time Zone. When calling 210 numbers from a different time zone, be sure to account for the time difference to reach people during business hours.
About Area Code 210
Area code 210 was introduced in 1992 as a geographic area code serving San Antonio, Texas. As demand for phone numbers grew, overlay code 726 was added to the same region, requiring 10-digit dialing for local calls. Area codes are administered by NANPA (North American Numbering Plan Administration), the organization responsible for managing phone number resources in the US and Canada.