Area Code 878: Pennsylvania, Pennsylvania
878 is a telephone area code serving Pennsylvania. It is part of the North American Numbering Plan and is dialed with the country code +1.
Numbers beginning with 878 are located in Pennsylvania, United States (NANP region: Southwest).
How to Dial Area Code 878
| Calling from | What to dial |
|---|---|
| Anywhere in the US or Canada | 1 878 XXX-XXXX (10-digit dialing: 878 + 7-digit number) |
| Local call inside the same area code | 7-digit number in most areas; 10 digits where an overlay code is active |
| From the UK or Europe | 00 1 878 XXX XXXX |
| From Australia | 0011 1 878 XXX XXXX |
| From a mobile phone anywhere | +1 878 XXX XXXX |
Whatever country you are calling from, the + symbol replaces the exit code. Save the contact as +1 878 XXXXXXX and it will dial correctly from any phone in the world.
Time Zone for Area Code 878
Calls to a 878 number ring in the America/New_York time zone, standard offset UTC-05:00. Daylight saving time applies here, so the offset moves forward one hour from March to November.
Other Area Codes in Pennsylvania
These codes also serve Pennsylvania. Area codes are assigned by the North American Numbering Plan Administration (NANPA).
| Area Code | Cities / Coverage |
|---|---|
| 215 | Philadelphia |
| 223 | Lancaster (overlay) |
| 267 | Philadelphia (overlay) |
| 272 | Wilkes-Barre (overlay) |
| 412 | Pittsburgh |
| 445 | Philadelphia (overlay) |
| 484 | Allentown, Reading (overlay) |
| 570 | Wilkes-Barre, Scranton |
| 610 | Allentown, Reading |
| 717 | Harrisburg, Lancaster |
| 724 | Pittsburgh suburbs |
| 814 | Erie, Altoona |
| 835 | Southeastern Pennsylvania (overlay for 610/484) |
See all 14 area codes in Pennsylvania →
Frequently Asked Questions
Where is area code 878?
Area code 878 is in Pennsylvania, United States. It covers Pittsburgh (overlay).
What time zone is area code 878 in?
Area code 878 rings in the America/New_York time zone (UTC-05:00 standard).
Do I need to dial 1 before area code 878?
Yes, for a long-distance call inside the US and Canada you dial 1 first, then 878, then the seven-digit number. The 1 is the North American long-distance trunk prefix — it is not the country code. From outside North America you dial your exit code then 1 then 878.
Is area code 878 toll-free?
No. 878 is a standard geographic area code, so normal long-distance rates apply unless your plan includes them. Toll-free NANP codes are 800, 833, 844, 855, 866, 877 and 888.