Pennsylvania · Eastern Time
724 Area Code
Area code 724 is in Pennsylvania, serving southwestern Pennsylvania surrounding Pittsburgh, outside most of Allegheny County. It is in the Eastern Time zone. It shares its territory with overlay code 878, so 10-digit dialing is required.
Last updated October 1, 2026 · Source: NANPA
Where is the 724 area code?
724 is a Pennsylvania area code covering southwestern Pennsylvania surrounding Pittsburgh, outside most of Allegheny County. In the wider directory it sits in the Northeast region.
Cities in the 724 area code
- New Castle
- Washington
- Greensburg
- Butler
- Uniontown
- Latrobe
- Indiana
- Beaver Falls
- Cranberry Township
- Monessen
- Connellsville
- Kittanning
- Aliquippa
- Hermitage
Counties served by 724
Washington County, Westmoreland County, Butler County, Beaver County, Lawrence County, Fayette County, Greene County, Indiana County, Armstrong County and Mercer County.
724 overlay codes and dialing
The 724 territory is covered by an overlay of 2 area codes: 724, 878. All of them serve the same geographic area, and the original code is 724. 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 724 area code
724 went into service on February 1, 1998, created when it was split from 412. It serves New Castle and the surrounding part of Pennsylvania, and today shares its territory with overlay code 878. For how codes are created, split, and overlaid, see how area codes work.
Is 724 a scam or spam risk?
724 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 724 number on your screen is no guarantee the caller is in New Castle, PA or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Other Pennsylvania area codes
Explore more
See every code in Pennsylvania, compare codes across the Northeast region, or view all Eastern Time codes. You can also browse the 7XX 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
724 area code FAQ
Where is the 724 area code?
The 724 area code is in Pennsylvania, covering southwestern Pennsylvania surrounding Pittsburgh, outside most of Allegheny County, in the Northeast region.
What cities are in the 724 area code?
Cities in the 724 area code include New Castle, Washington, Greensburg, Butler, Uniontown, Latrobe, Indiana, Beaver Falls, Cranberry Township and Monessen.
What time zone is 724 in?
724 is in the Eastern Time zone.
What is the overlay for the 724 area code?
724 shares its territory with 878. Both codes (724, 878) serve the same area, so 10-digit dialing is required for every call.
When did the 724 area code start?
724 went into service on February 1, 1998.
Do I have to dial 10 digits for 724?
Yes. Because 724 is an overlay area, you must dial the full 10-digit number (area code + 7 digits) for every call.
Is 724 a toll-free or premium code?
No. 724 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.