WHAT YOU NEED TO KNOW
Area code 412 serves the Pittsburgh metro area in southwestern Pennsylvania, covering Pittsburgh, McKeesport, Bethel Park, and Monroeville among other communities. One of the original 86 NANP codes established in 1947, it was reduced to its current footprint after a 1998 split. The code covers approximately 2.4 million residents across the greater Pittsburgh region.
- Population: ~2.4 million in the metro
- Overlay: None as of 2024
- Dialing: 10-digit dialing required
- Source Type: Local geographic code
Geographic Coverage
Area code 412 covers Pittsburgh and the surrounding communities that make up Allegheny County, which is its primary geographic footprint. Key municipalities include Bethel Park, Mount Lebanon, Penn Hills, Monroeville, West Mifflin, McKeesport, Carnegie, Bridgeville, Whitehall, Munhall, Brentwood, Swissvale, Plum, and Canonsburg. The code is concentrated within Allegheny County, with the city of Pittsburgh serving as the core. Neighboring counties such as Washington and Westmoreland fall primarily under the 724 area code.
Population and Business Context
The Pittsburgh metro area served by 412 has a population of roughly 2.4 million and represents one of the larger markets in the mid-Atlantic region. The local economy is anchored by healthcare, education, technology, and financial services, with major employers including UPMC, Carnegie Mellon University, the University of Pittsburgh, and PNC Financial Services. Pittsburgh has transitioned significantly from its historical steel-industry identity into a diversified urban economy, making the 412 market relevant across a broad range of business sectors.
Area Code History
Area code 412 was assigned in 1947 as one of the original 86 North American Numbering Plan codes, making it among the oldest in the country. At that time, it covered all of western Pennsylvania. As demand for telephone numbers grew, the region was divided. In 1998, the 724 area code was split from 412, taking over the outer suburban and rural portions of western Pennsylvania. Since that split, 412 has been concentrated in the Pittsburgh urban core and Allegheny County.
How to Dial
Calls within the 412 area code require 10-digit dialing, meaning you must dial the full area code plus the seven-digit local number even for calls within the same area code. There is no overlay code currently active for 412, so no additional dialing steps are needed to distinguish between two local codes. When dialing from outside the United States, callers add the country code 1 before the 10-digit number.
Need a 412 Number for Your Pittsburgh Business?
Businesses operating in the Pittsburgh metro area can use a 412 local number to establish a recognizable presence with Allegheny County customers. Convirza provisions trackable local numbers in any North American area code, including 412, so you can route calls to any team member or location while capturing every interaction. Every call on your 412 number gets scored, recorded, and source-attributed through dynamic number insertion (DNI). You can tie inbound calls directly to the campaigns, ads, or pages that generated them - and route calls to the right person based on time, location, or caller behavior. No guesswork in your attribution data.
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