New York · Eastern Time
624 Area Code
Area code 624 is in New York, serving western New York, including Buffalo, Niagara Falls and Jamestown. It is in the Eastern Time zone. It shares its territory with overlay code 716, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 624 area code?
624 is a New York area code covering western New York, including Buffalo, Niagara Falls and Jamestown. In the wider directory it sits in the Northeast region.
Cities in the 624 area code
- Buffalo
- Cheektowaga
- Amherst
- Tonawanda
- Niagara Falls
- West Seneca
- North Tonawanda
- Lockport
- Hamburg
- Lackawanna
- Jamestown
- Dunkirk
- Olean
- Salamanca
Counties served by 624
Erie County, Niagara County, Chautauqua County and Cattaraugus County.
624 overlay codes and dialing
The 624 territory is covered by an overlay of 2 area codes: 624, 716. All of them serve the same geographic area, and the original code is 716. 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 624 area code
624 went into service on November 16, 2023 as an overlay of 716, relieving number exhaustion in the Buffalo 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 624 a scam or spam risk?
624 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 624 number on your screen is no guarantee the caller is in Buffalo, NY or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other New York area codes
Explore more
See every code in New York, compare codes across the Northeast region, or view all Eastern Time codes. You can also browse the 6XX 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
624 area code FAQ
Where is the 624 area code?
The 624 area code is in New York, covering western New York, including Buffalo, Niagara Falls and Jamestown, in the Northeast region.
What cities are in the 624 area code?
Cities in the 624 area code include Buffalo, Cheektowaga, Amherst, Tonawanda, Niagara Falls, West Seneca, North Tonawanda, Lockport, Hamburg and Lackawanna.
What time zone is 624 in?
624 is in the Eastern Time zone.
What is the overlay for the 624 area code?
624 shares its territory with 716. Both codes (624, 716) serve the same area, so 10-digit dialing is required for every call.
When did the 624 area code start?
624 went into service on November 16, 2023 as an overlay of 716.
Do I have to dial 10 digits for 624?
Yes. Because 624 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 624 a toll-free or premium code?
No. 624 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.