Area Code 903 — Tyler, Texas

NANP area code

903

UTC−6, UTC−5 during daylight saving

State
Texas
Primary city
Tyler
Time zone
Central
In service
1990
Overlay
430

The code reaches 214 communities and 33 counties across Texas.

Was this call legitimate?

The area code itself carries no risk signal. 903 is assigned to Tyler, 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 903 territory is a plausible-looking origin for a forged 903 number, which is why one can be made to look like a neighbour to so many people. The same applies to its overlay code 430, which serves the same ground.

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 and ten-digit dialling

903 does not have its territory to itself. 430 covers the same ground, serving Tyler and the rest of the 903 territory. An overlay is what a regulator adds when a region runs out of assignable numbers: rather than splitting the area and forcing half the residents to change their number, a second code is laid over the top and new numbers are issued from it.

The practical consequence: two neighbours on the same street can hold numbers in different area codes, so the code tells you nothing about which part of town a caller is in — and local calls must be dialled as all ten digits, because seven is no longer unambiguous.

Cities served

largest 20 by ZIP count
Communities served by area code 903, ranked by how many ZIP codes each holds.
CityZIP codesCounty
Tyler15Smith County
Longview9Gregg County
Texarkana6Bowie County
Greenville4Hunt County
Palestine4Anderson County
Tennessee Colony4Anderson County
Corsicana3Navarro County
Henderson3Rusk County
Marshall3Harrison County
Paris3Lamar County
Sherman3Grayson County
Athens2Henderson County
Big Sandy2Upshur County
Commerce2Hunt County
Denison2Grayson County
Gilmer2Upshur County
Kilgore2Gregg County
Mabank2Kaufman County
Mount Pleasant2Titus County
Sulphur Springs2Hopkins County

194 further communities not listed. All Texas area codes →

Each point is a community served by 903, 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 903. 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 903

We do not publish the NXX prefixes inside 903. 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.

Why this code exists

903 has served this territory since 1990. It eventually ran short of exchanges to hand out, and rather than split the region and make half its residents change their number, the regulator laid 430 over the same ground in 2003. New lines here are issued from the newer code, which is why a neighbour’s number may not start with 903.