Area Code 830 — San Antonio, Texas

NANP area code

830

UTC−6, UTC−5 during daylight saving

State
Texas
Primary city
San Antonio
Time zone
Central
In service
1997

The code reaches 126 communities and 32 counties across Texas.

Was this call legitimate?

The area code itself carries no risk signal. 830 is assigned to San Antonio, Texas, so a call from it is consistent with a real caller in that area — but the digits alone prove nothing, because they can be forged.

Caller ID is set by whoever places the call, not verified by the network. That is why neighbour spoofing works: an operation anywhere in the world can display a number that matches the area code — and often the first three digits after it — of the person being called, so the call looks local. Every community in the 830 territory is a plausible-looking origin for a forged 830 number, which is why one can be made to look like a neighbour to so many people.

If you did not recognise the call: let it go to voicemail — a legitimate caller with real business will leave one. Do not return the call using the number shown; look the organisation up independently and call the number you found. Never confirm personal details, card numbers, or one-time codes to someone who called you, however plausible the number looked.

Codes.zone publishes no complaint counts, risk scores, or caller identities. We hold no data on individual numbers and will not estimate what we cannot source.

Local time and when to call back

Time there now

Central · UTC−6, UTC−5 during daylight saving

Reasonable callback window

8:00 AM – 9:00 PM

local time in Central

Federal rules bar telemarketing calls to a residence outside 8:00 AM–9:00 PM in the called party's own time zone. It is a sensible bound for a personal callback too — and a caller who rang you well outside it was not observing it.

Overlay codes

830 is the only area code serving its territory — it has no overlay in the current numbering plan for Texas. Where a region has no overlay, a number's area code still corresponds to a single geographic area.

Cities served

largest 20 by ZIP count
Communities served by area code 830, ranked by how many ZIP codes each holds.
CityZIP codesCounty
San Antonio83Bexar County
Del Rio4Val Verde County
New Braunfels4Comal County
Boerne2Bexar County
Eagle Pass2Maverick County
Kerrville2Kerr County
Seguin2Guadalupe County
Uvalde2Uvalde County
Adkins1Bexar County
Artesia Wells1La Salle County
Asherton1Dimmit County
Atascosa1Bexar County
Bandera1Bandera County
Barksdale1Edwards County
Batesville1Zavala County
Belmont1Gonzales County
Bergheim1Kendall County
Big Wells1Dimmit County
Bigfoot1Frio County
Blanco1Blanco County

106 further communities not listed. All Texas area codes →

Each point is a community served by 830, plotted from its record coordinates. The outline is the convex envelope of those points — a footprint, not a boundary.
  • Reference points and footprint
  • Not an official NANPA boundary
  • Not a USPS delivery area

Scope every community matched to 830. Source geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot), GeoNames US postal codes (2026-07 postal dump) and Census 2024 county Gazetteer (2024 Gazetteer). Updated . Coordinates are place reference points, not boundaries.

Counties

Prefixes inside 830

We do not publish the NXX prefixes inside 830. The assignment of prefixes to rate centres comes from LERG routing data, which is proprietary, and we will not estimate it from postal data — ZIP codes and telephone prefixes do not map onto each other. Awaiting a clean-rights NPA-NXX source.