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Area code 210

Area code 210 San Antonio, Texas

Area code 210 is in Texas, with numbers assigned in San Antonio. It’s 11:10 PM there now.

State
Texas29 area codes in Texas
Time zone
Central11:10 PM there now
Exchanges
7841 place
Overlay
726Same area, 10-digit dialing
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Where area code 210 is

Numbers in 210 are assigned to 1 place in 3 counties: Bexar County, Comal County and Medina County.

San Antonio holds most of them: 100% of the exchanges.

  • San Antonio784

Phone companies in 210

784 blocks of numbers in 210 are held by 33 phone companies. The most belong to AT&T (280), AT&T Mobility (129) and T-Mobile (106).

A mix: about 37% wireless, 36% local phone and cable and 27% other carriers, including internet phone services.

A block’s holder is the company it was first assigned to; numbers can move to other carriers since.

History and overlays

210 went into service in 1992, added to the area of 512.

726 (since 2017) shares the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.

16 new exchanges were assigned since 2021, the latest in July 2026.

Calling 210

It’s 11:10 PM Central time in 210 right now.

From elsewhere in the U.S., dial 1, 210 and the 7-digit number; inside the area, all 10 digits too.

Nearby area codes

Texas has 29 area codes: 210, 214, 254, 281, 325, 346, 361, 409, 430, 432, 469, 512, 621, 682, 713, 726, 737, 806, 817, 830, 832, 903, 915, 936, 940, 945, 956, 972 and 979.

From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.

Map of the 210 area code

Map of the 210 area code around San Antonio, Texas.

Interactive map © OpenStreetMap contributors

Cities on the map

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Questions about 210

Where is area code 210?

In Texas, covering San Antonio across 3 counties.

What time zone is 210 in?

Central time. It was 11:10 PM there when this page loaded.

Is 210 an overlay?

Yes. 726 serves the same area, so dial all 10 digits for local calls.

Which phone companies have 210 numbers?

33 companies hold blocks; the most belong to AT&T, AT&T Mobility and T-Mobile. About 37% of blocks are wireless.

Is 210 running out of numbers?

Not on record. 16 new exchanges have been assigned since 2021.