Texas · Central Time
430 Area Code
Area code 430 is in Texas, serving northeast Texas, including Tyler, Longview, Texarkana and Sherman. It is in the Central Time zone. It shares its territory with overlay code 903, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 430 area code?
430 is a Texas area code covering northeast Texas, including Tyler, Longview, Texarkana and Sherman. In the wider directory it sits in the South region.
Cities in the 430 area code
- Tyler
- Longview
- Texarkana
- Sherman
- Denison
- Paris
- Marshall
- Greenville
- Sulphur Springs
- Palestine
- Kilgore
- Jacksonville
- Athens
- Mount Pleasant
Counties served by 430
Smith County, Gregg County, Bowie County, Grayson County, Lamar County, Harrison County, Hunt County, Hopkins County, Anderson County and Henderson County.
Time zone note: Almost all of Texas is Central; far-west El Paso is Mountain.
430 overlay codes and dialing
The 430 territory is covered by an overlay of 2 area codes: 430, 903. All of them serve the same geographic area, and the original code is 903. Because more than one code covers the same ground, 10-digit dialing is mandatory — you must dial the area code for every local call. New phone lines may be assigned any of these codes.
History of the 430 area code
430 went into service on February 15, 2003 as an overlay of 903, relieving number exhaustion in the Tyler area. Rather than splitting the region, the overlay lets existing customers keep their numbers while new lines draw from the added code. Learn more in our overlay guide.
Is 430 a scam or spam risk?
430 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 430 number on your screen is no guarantee the caller is in Tyler, TX or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Texas area codes
Explore more
See every code in Texas, compare codes across the South region, or view all Central Time codes. You can also browse the 4XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
430 area code FAQ
Where is the 430 area code?
The 430 area code is in Texas, covering northeast Texas, including Tyler, Longview, Texarkana and Sherman, in the South region.
What cities are in the 430 area code?
Cities in the 430 area code include Tyler, Longview, Texarkana, Sherman, Denison, Paris, Marshall, Greenville, Sulphur Springs and Palestine.
What time zone is 430 in?
430 is in the Central Time zone. Almost all of Texas is Central; far-west El Paso is Mountain.
What is the overlay for the 430 area code?
430 shares its territory with 903. Both codes (430, 903) serve the same area, so 10-digit dialing is required for every call.
When did the 430 area code start?
430 went into service on February 15, 2003 as an overlay of 903.
Do I have to dial 10 digits for 430?
Yes. Because 430 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 430 a toll-free or premium code?
No. 430 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.