Bexar County · Texas
San Antonio, TX area codes and time zone
Quick answer
San Antonio is served by area code 210, keeps CST time (GMT-6), and sits in county FIPS 48029.
- Area code
- 210Within 25 miles of the city centre
- Time zone
- CSTAmerica/Chicago
- UTC offset
- GMT-6CDT in summer (UTCGMT-5)
- County FIPS
- 48029Bexar County
Dialling from and to San Antonio
What this means when you pick up the phone.
Local calls inside 210 may still work on seven digits, but ten-digit dialling is the safe default everywhere in the country now. From abroad, dial +1 then the ten digits.
How San Antonio came to have one area code
Why one city can carry several codes.
Area codes are assigned to geography, then exhausted as demand grows. San Antonio — population about 1,495k — is covered by code 210, drawn from within 25 miles of the city centre. A single code still has enough numbers for the area, so no overlay has been needed yet. When growth exhausts it, regulators will layer on a new code and local calls will move to ten digits.
More San Antonio data
Other San Antonio datasets on this site.
- San Antonio population and income
- San Antonio sales tax rate
- San Antonio property tax
- San Antonio cost of living
- San Antonio home values and rent
- San Antonio crime rates
- San Antonio public schools
- San Antonio weather normals
- San Antonio commute times
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