878 Area Code
Covers Pittsburgh and nearby communities in Pennsylvania.
(878) 555-0142Area code 878 map
Interactive coverage map for area code 878, centered on Pittsburgh, Pennsylvania
40.4406, -79.9959
Open in OpenStreetMapArea code 878 coverage map — centered on Pittsburgh. Shaded area shows the approximate reach around the primary city.
Area code 878 is a telephone area code in Pennsylvania, anchored on Pittsburgh. It reaches roughly 306,000 people across places such as Pittsburgh, Bethel Park, McKeesport, Monroeville and more. The region observes Eastern time, so a number like (878) 555-0142 is on that clock right now. On the ground it spans Allegheny, Lawrence. It shares its territory with the overlay code 412, which sit on the exact same map. Because the 878 region uses more than one area code, you must dial all ten digits — area code included — even for a local call. You do not, however, need to dial a leading 1 for calls within the US and Canada. Scroll on for a real-time clock, an area map, the cities and counties inside 878, its related area codes, and practical advice on 878 robocalls and caller-ID spoofing.
Cities covered by 878
Cities & neighborhoods
- Pittsburgh
- Bethel Park
- McKeesport
- Monroeville
- Mount Lebanon
- New Castle
- Penn Hills
- Plum
- Upper Saint Clair
- West Mifflin
Nearby & overlay area codes
Overlay codes (same area)
These share 878’s geography — a number in either code can be on the same street.
Neighboring codes
Codes for adjacent regions and metros.
Is a call from 878 a scam?
Area code 878 serves Pittsburgh and the surrounding area, so most calls are ordinary local and business traffic. As everywhere, spam and robocalls do use 878 numbers, frequently by spoofing a local-looking caller ID to boost pickup rates. The area code itself tells you nothing about who is really calling, so judge the call by what's said, not the number.
Red flags to watch for
- Pressure to act right now, or threats of arrest, fines, or service being cut off.
- Requests to pay with gift cards, wire transfer, crypto, or a payment app.
- Asking for passwords, one-time codes, your SSN, or full card/bank numbers.
- A robocall or recording, or a number that won’t let you call back.
When unsure, hang up and call the organization back on a number you look up yourself.
Calling a 878 number from abroad
Every 878 number is a US/Canada +1 number. From a mobile anywhere, the simplest approach is to dial it in international format:
+1 878 555-0142If your phone can’t dial the +, replace it with your country’s exit code, then 1, then the number:
- UK, Germany, France & most of Europe
00 1 878 555-0142 - Australia
0011 1 878 555-0142 - Japan
010 1 878 555-0142 - Mexico
00 1 878 555-0142
Within the US and Canada you don’t need any of this — just dial the ten digits 878 555-0142.
Reverse phone lookup
Check any US or Canada number to see whether it's a working line, which carrier it sits on, whether it's mobile, landline or VoIP, and roughly where it's registered.
Shows carrier, line type and location. Owner name isn't available here.
Results are for personal, informational use only and may not be used for employment, credit, housing or tenant-screening decisions.
Area code 878: frequently asked questions
Where is the 878 area code located?
The 878 area code is located in Pennsylvania, centered on Pittsburgh. It covers Allegheny, Lawrence and nearby communities including Pittsburgh, Bethel Park, McKeesport, Monroeville, Mount Lebanon, New Castle.
What time zone is 878 in?
Area code 878 is in the Eastern time zone (UTC-5 (EST) / UTC-4 (EDT)). You can see the exact current local time for Pittsburgh on the live clock above.
What cities use area code 878?
Cities and areas that use 878 include Pittsburgh, Bethel Park, McKeesport, Monroeville, Mount Lebanon, New Castle. Its primary city is Pittsburgh, PA.
Do I need to dial 1 before 878?
For calls within the US, you do not need to dial a leading 1, but you do need all ten digits: 878 plus the seven-digit number. The 878 area requires ten-digit dialing because more than one area code serves it.
Is 878 a toll-free or scam number?
No — 878 is a normal geographic area code for Pittsburgh, not a toll-free code (toll-free codes are 800, 833, 844, 855, 866, 877 and 888). A 878 number is not inherently a scam, but the code can be spoofed. See the spam-call section above for how to tell.
What are the overlay area codes for 878?
Area code 878 is overlaid by 412, meaning those codes cover the same geographic area.