Area code 412

About area code 412

Area code 412 is a geographic area code in Pennsylvania, in service since January 1, 1947, according to the North American Numbering Plan Administrator (NANPA). It is an overlay: 412 and 878 cover the same territory, so neighbors on the same street can have different area codes. It is in the Eastern time zone. The places with the most assigned exchanges include Elizabeth, Clairton, Greensburg, Washington, and Butler. By population, its largest named places are Butler, Washington, Greensburg, Indiana, and Elizabeth.

Places served by 412

412 holds 9.2% of the 8,256 central office codes assigned in Pennsylvania, the 9th most of the state's 15 codes. 10 Census places could be matched to rate centers with 412 exchanges; the most populous are Butler (16,953), Washington (15,411), Greensburg (14,586), and Indiana (14,294). Each place page lists the exact prefixes and carriers for that town.

How calls are dialed in 412

According to NANPA's dialing-plan data, local calls within 412 are dialed as ten digits (area code plus number) and toll calls as ten digits (area code plus number). Because local calls need the area code, business cards, signage and website copy should always show the full ten-digit number. NANPA's dialing-plan note for this code reads: "All calls within and between NPAs 412 and 724 and 878 can be dialed as 10D or 1+10D. Calls to other NPAs must be dialed as 1+10D."

Carriers with 412 numbers

40 carriers hold the 762 central office codes assigned in 412. Verizon Pennsylvania, INC. has the most, with 246 (32%). 493 of the codes (65%) are pooled, meaning the code holder shares blocks of 1,000 numbers with other carriers instead of using all 10,000 itself. The code holder is not necessarily the carrier serving a given number today, since numbers can be ported between providers.

Where 412 numbers are rated

NANPA assigns each central office code to a rate center, the local calling area that decides whether a call is local or toll. 412 has codes in 32 rate centers. Rate center names in the file are abbreviations; where one matches a Census place, the table links to that city's local-number page.

How full is area code 412?

An area code has 800 possible central office codes that start with 2 through 9, a few of which are reserved (such as N11 service codes and 555). 762 are assigned in 412, 95% of 800. 53 were assigned in 2020 or later.

Using area code 412 for business calls

Callata Office costs $99 per month for up to 5 people, and each additional user is $20 a month. That covers up to 3 local numbers, calling from a browser or your cell, transcribed voicemail, recorded calls with AI summaries, after-hours routing and E911 on each number.

Porting a number you already use in area code 412 is free, and business texting is available once the carrier registration (10DLC) is approved; the registration carries a one-time $49 fee. Which specific numbers are open in a given area code depends on carrier inventory at the time you sign up.

AI agents are optional: an AI receptionist or scheduler can pick up when the team is busy or closed, take a message, send a text or email, or transfer the call. They draw on prepaid AI minutes ($0.25/minute), disclose that they are AI, and outbound AI calls require prior consent and are limited to 8am–9pm.