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US area code · Texas

Area code 210

Where the 210 area code is, its overlay and how to dial a +1 210 number from anywhere.

CoversSan Antonio, TexasTime zoneCentral (CT)TypeOverlay
Quick answer

The 210 area code is in San Antonio, Texas, United States (Central (CT)). To call from abroad: +1 210 555-0123. It is an overlay, so all 10 digits are dialled.

StateTexas
Main areaSan Antonio
Time zoneCentral (CT)
TypeOverlay
10-digit dialingRequired
In service since01-Nov-1992

The 210 area code is a geographic North American Numbering Plan (NANP) code covering San Antonio, Texas. It has been in service since 01-Nov-1992 and sits in the Central (CT) time zone.

Overlay 210 shares its region

Several area codes cover the same geographic area, so two neighbours can have different codes. Because of the overlay, you must dial all 10 digits (area code + number) even for local calls.

210512726

How to dial a 210 number

From abroad+1 210 555-0123
Within the US / Canada1 210 555-0123
Locally (same area)210 555-0123

Cities in the 210 area code

A 210 number is usually in one of these places in Texas — 1 county.

San Antonio Bexar;Comal

Other Texas area codes

214254281325346361409430432469512621682713726737

Frequently asked questions

Where is the 210 area code?

The 210 area code is in San Antonio, Texas, United States (Central (CT)).

Is 210 an overlay area code?

Yes. 210 overlays the same region as 512, 726, so callers dial all 10 digits.

Do I have to dial 10 digits for 210?

Yes — dial the area code plus the seven-digit number.

How do I call a 210 number from another country?

Dial your exit code (or +), then 1, then 210, then the number: +1 210 555-0123.

Source: NANPA numbering plan. An area code covers a region, not a precise address — a 210 number does not pinpoint a street or ZIP code.

Missed a call from +1 210?

In the 30 days to September 24, 2026, 779 unwanted calls showing a 210 number were reported to the US Federal Trade Commission, 66% of them recorded messages or robocalls. That puts 210 at #83 of 670 area codes reported.

Other353
Calls pretending to be government, businesses, or family and friends121
Medical & prescriptions104
Dropped call or no message95
Before you call back
  • If you do not know anyone in Texas, do not call back: a genuine caller will leave a message or send a text.
  • Scammers fake the number shown on caller ID, so a 210 number can hide a caller anywhere in the world.
  • Never give a code received by text or a bank detail to an unknown caller. In the US, calls can be reported at reportfraud.ftc.gov.

Who issues +1 210 numbers

Phone companies hold blocks of numbers in each area code. The main holders in 210:

Southwestern Bell 281New Cingular Wireless PCS, LLC 129T-Mobile USA, Inc. 94Cellco Partnership Dba Verizon Wireless 54Mcimetro Access Transmission Services LLC 39Onvoy, LLC 37

About 34.8% of the 800 prefixes in use belong to mobile carriers: a 210 number is often a cell phone, and it may have moved to another carrier since.

Sources: FTC Do Not Call reported calls (numbers as reported by consumers, not verified), NANPA central office code assignments.

All US area codes United States +1 Map of area code 210 — cities & rate centres