Every ZIP code in the United States, with weather, radar, trivia and the numbers behind it. Five digits since 1963!

ZIP stands for Zone Improvement Plan. The codes went live on July 1, 1963.The lowest ZIP code is 00501 — the IRS in Holtsville, New York.The highest ZIP code is 99950, in Ketchikan, Alaska.Type 07734 into a calculator and turn it upside down: hELLO. It is Keansburg, New Jersey.12345 belongs to one company: General Electric in Schenectady, New York.The first digit is a region: 0 is New England and New Jersey, 9 is the West Coast, Alaska and Hawaii.Mr. ZIP, the cartoon mailman, was the mascot that sold the idea to America.ZIP+4 arrived in 1983 and can narrow a ZIP down to one side of one block.A ZIP code is a mail route, not a place: plenty of them cross county and even state lines.Play ZIP Hunt: guess the secret ZIP code of the day in six tries.
zipcodes.pro — AREA-CODE/412

412 area code

Area code 412 is in Pennsylvania. It covers Pittsburgh, Monroeville, Mc Kees Rocks and 122 other places: 136 ZIP codes in Allegheny, Beaver, Butler and 5 other counties. Local time there is , Eastern Time. In service since 1947; 878 (2001) overlays it, so a number from there can have either code.

Time zone
Eastern
Largest city
Pittsburgh
Overlays
878
In service since
1947
Rate centres
32
Prefixes assigned
762 (7,620,000 numbers)

Who calls from a 412 number

NANPA records the carrier each block of 412 numbers is assigned to. Of the 7.3 million 412 numbers assigned, 35% are with cable, internet-calling, business and other carriers (Onvoy and Bandwidth); 33% with mobile carriers (Verizon Wireless, T-Mobile and AT&T Mobility); 29% with local phone companies (Verizon); 3% with paging companies.

That is who the numbers were assigned to: people keep their number when they change carrier, so any one number may have moved since.

Carriers holding the most 412 numbers
CarrierKindShare
VerizonLandline28%
Verizon WirelessMobile15%
OnvoyCable, VoIP, other10%
T-MobileMobile10%
AT&T MobilityMobile9%
BandwidthCable, VoIP, other4%

An area code says where a number was issued, not where the caller is: people keep their numbers when they move, and caller ID can be set to show any number, which the FCC calls spoofing. If a call you did not expect asks for money or personal details, the FCC advises hanging up and calling the company back on a number you look up yourself. Unwanted calls can be reported to the FTC at ReportFraud.ftc.gov.

Places in area code 412

The 11 places with a telephone rate centre of their own using 412, largest first. Each links to its ZIP codes.

Places in area code 412
PlaceZIP codesPopulation
Pittsburgh, PA 75 304,759
Greensburg, PA 3 14,741
Indiana, PA 2 14,212
Washington, PA 1 13,368
Butler, PA 3 13,212
Uniontown, PA 1 9,742
Beaver Falls, PA 1 8,850
Clairton, PA 1 6,044
Kittanning, PA 1 3,902
Rochester, PA 1 3,422
Elizabeth, PA 1 1,371

Nearby places using 412

These places have no rate centre of their own in NANPA's records; the nearest one uses 412. Near an area-code boundary that can be wrong for part of a town.

ZIP codes in area code 412

136 ZIP codes in 56 towns, by the town each is mailed to, largest first. Each links to its own page.

Where 412 numbers are issued

NANPA's rate centres with the most 412 prefixes (each prefix is 10,000 numbers), under NANPA's own abbreviated names.

Rate centres using area code 412
Rate centrePlacePrefixes
PTTSBGZON1 Pittsburgh 314
PTGSBNZN14 — 41
PTTSBGZON6 Pittsburgh 34
PTGSBNZN22 — 32
PTTSBGZON7 Pittsburgh 32
PTGSBNZN10 — 25

Counties

The counties of its ZIP codes, most residents first, with how many of its ZIP codes each has.

Which code covers where you are now? What area code am I in? answers from your location.

Questions about area code 412

Where is area code 412?

Area code 412 is in Pennsylvania. It covers Pittsburgh, Monroeville, Mc Kees Rocks and 122 other places: 136 ZIP codes in Allegheny, Beaver, Butler and 5 other counties.

What ZIP codes are in area code 412?

136 ZIP codes, by the town each is mailed to: Pittsburgh (75, 15201 to 15295), Monroeville (15146), Mc Kees Rocks (15136), West Mifflin (2, 15122 to 15123) and 52 more towns. The full list is on this page.

What time zone is area code 412 in?

Eastern time.

Is a 412 number a mobile or a landline?

It can be either. 33% of 412 numbers are assigned to mobile carriers and 29% to local phone companies (NANPA, 2026-10-10); the rest are with cable, internet-calling, business and paging carriers. A number keeps its area code when it moves to another carrier.

What area codes overlay 412?

878. They cover the same area as 412, so a new number there can be given any of them.

Does a 412 number mean the caller is in Pennsylvania?

Not necessarily. An area code says where the number was first issued. People keep their numbers when they move or switch carriers, and calling software can show any number, so a 412 call can come from anywhere.

Other area codes in Pennsylvania

All 15 Pennsylvania area codes, by area, with the cities each covers

Source: NANPA NPA database, central office code and thousands-block assignments, 2026-10-10. Places are matched to NANPA's rate centres by name; see sources.

Cite this page

zipcodes.pro. “Area code 412.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/area-code/412

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