Area Code 210: San Antonio, Texas
210 is a telephone area code serving Texas, including San Antonio. It is part of the North American Numbering Plan and is dialed with the country code +1.
Numbers beginning with 210 are located in Texas, United States (NANP region: South Central). The code covers San Antonio.
How to Dial Area Code 210
| Calling from | What to dial |
|---|---|
| Anywhere in the US or Canada | 1 210 XXX-XXXX (10-digit dialing: 210 + 7-digit number) |
| Local call inside the same area code | 7-digit number in most areas; 10 digits where an overlay code is active |
| From the UK or Europe | 00 1 210 XXX XXXX |
| From Australia | 0011 1 210 XXX XXXX |
| From a mobile phone anywhere | +1 210 XXX XXXX |
Whatever country you are calling from, the + symbol replaces the exit code. Save the contact as +1 210 XXXXXXX and it will dial correctly from any phone in the world.
Time Zone for Area Code 210
Calls to a 210 number ring in the America/Chicago time zone, standard offset UTC-06:00. Daylight saving time applies here, so the offset moves forward one hour from March to November.
Note: El Paso County, Hudspeth County and part of northwestern Culberson County use Mountain time, one hour behind. Area code 915 is entirely on the Mountain side - see that page.
Cities and Communities Served by 210
The following places fall inside the 210 calling area:
Other Area Codes in Texas
These codes also serve Texas. Area codes are assigned by the North American Numbering Plan Administration (NANPA).
| Area Code | Cities / Coverage |
|---|---|
| 214 | Dallas |
| 254 | Waco, Killeen |
| 281 | Houston (suburbs) |
| 325 | Abilene, San Angelo |
| 346 | Houston (overlay) |
| 361 | Corpus Christi |
| 409 | Beaumont, Galveston |
| 430 | East Texas (overlay) |
| 432 | Midland, Odessa |
| 469 | Dallas (overlay) |
| 512 | Austin |
| 621 | Houston (overlay for 281/346/713/832) |
| 682 | Fort Worth (overlay) |
| 713 | Houston (central) |
See all 28 area codes in Texas →
Frequently Asked Questions
Where is area code 210?
Area code 210 is in Texas, United States. It covers San Antonio.
What time zone is area code 210 in?
Area code 210 rings in the America/Chicago time zone (UTC-06:00 standard).
Do I need to dial 1 before area code 210?
Yes, for a long-distance call inside the US and Canada you dial 1 first, then 210, then the seven-digit number. The 1 is the North American long-distance trunk prefix — it is not the country code. From outside North America you dial your exit code then 1 then 210.
Is area code 210 toll-free?
No. 210 is a standard geographic area code, so normal long-distance rates apply unless your plan includes them. Toll-free NANP codes are 800, 833, 844, 855, 866, 877 and 888.