Caller ID for
Area code 878
Area code 878 Pittsburgh, Pennsylvania
Area code 878 is in Pennsylvania, with numbers assigned in Pittsburgh, Beaver Falls, Washington and 81 more places. It’s 12:14 AM there now.
- State
- Pennsylvania15 area codes in Pennsylvania
- Time zone
- Eastern12:14 AM there now
- Exchanges
- 19184 places
- Overlay
- 412 and 724Same area, 10-digit dialing
- No sign-up
- We never contact the number
- Spam risk included
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Where area code 878 is
Numbers in 878 are assigned to 84 places in 14 counties: Westmoreland County, Beaver County, Fayette County, Allegheny County, Washington County, Indiana County, plus 8 more.
No single place dominates: Pittsburgh, the largest, has 8% of the exchanges.
- Pittsburgh15
- Beaver Falls9
- Washington8
- Rochester7
- Greensburg7
- Uniontown6
- Butler4
- New Kensington4
- Aliquippa3
- Indiana3
- Ellwood City3
- Homer City3
- Charleroi2
- Connellsville2
- Fairchance2
- Republic2
- Farmington2
- Export2
- New Wilmington2
- Ford City2
- New Castle2
- Slippery Rock2
- Gibsonia2
- Black Lick2
Phone companies in 878
191 blocks of numbers in 878 are held by 36 phone companies. The most belong to Inteliquent (51), Ton80 Communications (19) and Aerial Communications (14).
A large share, about 76%, belongs to competitive and internet phone carriers; wireless networks hold 8% and local phone and cable companies 16%.
A block’s holder is the company it was first assigned to; numbers can move to other carriers since.
History and overlays
878 went into service in 2001, added to the area of 412.
412 (since 1947) and 724 (since 1998) share the same area, so a new number there can get any of these codes and local calls are dialed with all 10 digits.
111 new exchanges were assigned since 2021, the latest in October 2026.
Calling 878
It’s 12:14 AM Eastern time in 878 right now.
From elsewhere in the U.S., dial 1, 878 and the 7-digit number; inside the area, all 10 digits too.
Nearby area codes
Pennsylvania has 15 area codes: 215, 223, 267, 272, 412, 445, 484, 570, 582, 610, 717, 724, 814, 835 and 878.
- 814 · Erie, PA · about 66 mi
- 582 · Boalsburg, PA · about 72 mi
- 330 · Akron, OH · about 84 mi
- 234 · Akron, OH · about 85 mi
- 440 · Willoughby Hills, OH · about 113 mi
- 216 · Cleveland, OH · about 122 mi
From the North American Numbering Plan Administrator’s area code and exchange records (10/22/2026) and U.S. Census place and county names. Places and companies are where number blocks were assigned, not where anyone lives or which carrier a number uses today.
Map of the 878 area code
Map of the 878 area code around Pittsburgh, Beaver Falls and Washington, Pennsylvania.
Cities on the map
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Questions about 878
Where is area code 878?
In Pennsylvania, covering Pittsburgh, Beaver Falls and Washington and other places across 14 counties.
What time zone is 878 in?
Eastern time. It was 12:14 AM there when this page loaded.
Is 878 an overlay?
Yes. 412 and 724 serve the same area, so dial all 10 digits for local calls.
Which phone companies have 878 numbers?
36 companies hold blocks; the most belong to Inteliquent, Ton80 Communications and Aerial Communications. About 8% of blocks are wireless.
Is 878 running out of numbers?
Not on record. 111 new exchanges have been assigned since 2021.