The 430 area code covers northeast Texas — Tyler, Longview, Sherman, Texarkana, and dozens of surrounding communities — as an overlay on the original 903 area code. It launched on February 15, 2003, becoming Texas's 22nd area code, and shares the exact same geographic footprint as 903 rather than dividing it. Northeast Texas sits entirely in the Central Time Zone.
This guide covers where 430 reaches, why it overlays 903 instead of splitting it, walks through the region's area code history, and details the northeast Texas economy behind the code.
Where the 430 overlay reaches
The 430 area code location is northeast Texas — a broad, mostly rural region spanning 32 counties from the Dallas exurbs to the Arkansas and Louisiana borders.
Cities in the 430 / 903 overlay area:
| City | County |
|---|---|
| Tyler | Smith |
| Longview | Gregg |
| Sherman | Grayson |
| Texarkana | Bowie |
| Greenville | Hunt |
| Paris | Lamar |
| Marshall | Harrison |
| Corsicana | Navarro |
What 430 does NOT cover:
- Dallas–Fort Worth metro → 214 / 469 / 972 / 972
- Houston → 713 / 281 / 832
- Austin → 512 / 737
Why 430 overlays 903 instead of splitting it
By the early 2000s, northeast Texas's growing population — along with new cell phones, pagers, and fax lines — had pushed the 903 number pool toward exhaustion.
Rather than split the 32-county region and force half its residents to change numbers, Texas regulators chose an all-services overlay: 430 was assigned to the identical geography as 903, and new subscribers began receiving 430 numbers while every existing 903 number stayed unchanged.
What the overlay means in practice:
A Tyler business on 903-XXX-XXXX and a neighbor on 430-XXX-XXXX are on the same street — same geography, same rates, always local. Ten-digit dialing (area code plus seven digits) is required on every call, even between next-door neighbors, because the two codes cannot be told apart by the seven-digit number alone.
Northeast Texas area code history
1947 — East Texas, including what would become the 903 region, was part of the broad 214 area code covering the entire Dallas–Fort Worth and northeast Texas area.
1957 — As the Dallas metro's population outpaced 214's number supply, the rural and small-city counties of northeast Texas were split off into a new code: 903.
February 15, 2003 — With mobile phones and fax lines accelerating number consumption across all 32 counties, the Texas Public Utility Commission approved an all-services overlay rather than another geographic split. 430 launched on the same footprint as 903, and mandatory ten-digit dialing took effect region-wide.
Today — 430 and 903 continue to share identical territory, much like 716 and its 624 overlay in western New York — two different states reaching the same overlay solution for the same underlying growth problem.
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What the 430 / 903 economy runs on
Northeast Texas's economy blends energy, healthcare, and agriculture across its rural counties:
Healthcare UT Health East Texas, headquartered in Tyler, is the region's largest healthcare system, anchoring thousands of jobs across its northeast Texas hospital network.
Oil and gas The East Texas Oil Field, discovered in 1930 near Kilgore and Longview, remains one of the largest oil fields ever found in the contiguous United States and continues to support the regional economy nearly a century later.
Agriculture — the Rose Capital Tyler has been known as the "Rose Capital of America" since the early 1900s, home to the largest municipal rose garden in the country and a nursery industry that once supplied roses nationwide.
Businesses across Tyler, Longview, and the wider 430/903 footprint increasingly run their phone systems on UCaaS (Unified Communications as a Service) rather than traditional desk-phone lines — one cloud platform for calling, video, and messaging that follows a growing company across multiple northeast Texas offices without new hardware at each site. Contact us to explore 430 numbers and UCaaS plans for your northeast Texas business presence.
Is 430 a scam number?
Because 430 is a relatively newer overlay code, robocallers frequently spoof 430 numbers to appear local to northeast Texas residents. Common patterns include vehicle warranty scams, fake utility disconnection threats, and prize-notification calls. The FCC's STIR/SHAKEN call authentication protocol requires carriers to verify caller ID before connecting — any unexpected 430 call demanding immediate payment or personal information should be treated as suspicious.
Key takeaways
- 430 overlays 903 across 32 counties in northeast Texas — Tyler, Longview, Sherman, Texarkana — since February 15, 2003.
- No geographic split — 430 and 903 share identical territory; ten-digit dialing is mandatory throughout.
- 430 is exclusively a Texas overlay code — not assigned in any other state.
- Time zone: Central (CT) throughout.
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Frequently asked questions
What is the 430 area code?
Area code 430 is an overlay covering northeast Texas — Tyler, Longview, Sherman, Texarkana, and 32 surrounding counties. It shares its exact territory with the original 903 area code.
Where is the 430 area code located?
Area code 430 is in northeast Texas, covering Tyler, Longview, Sherman, Texarkana, Greenville, Paris, and Marshall, among dozens of other communities across a 32-county region.
Is 430 a spam number?
Not inherently — 430 is a legitimate Texas area code. However, robocallers do spoof 430 numbers to appear local, so treat unexpected calls demanding payment or personal information with caution.
What time zone is the 430 area code?
Area code 430 is in the Central Time Zone (CT) — CST (UTC −6) in winter and CDT (UTC −5) during Daylight Saving Time.
Where does the 430 area code come from?
Area code 430 was created on February 15, 2003, as an all-services overlay on the existing 903 area code, added because the region's original number supply was running low.
How do I get a 430 area code number?
Sign up with a VoIP provider such as My Country Mobile, search for available 430 numbers, choose a Tyler or Longview-area prefix, select a plan, and activate.
