The area code 412 is located in Pittsburgh, Pennsylvania.
Area code 412 serves the heart of Pittsburgh, Pennsylvania, anchoring the city’s core in southwestern PA where the Allegheny and Monongahela rivers meet to form the Ohio. Established in 1947 as one of the original North American area codes, 412 carries historic weight and strong local identity. It primarily covers Pittsburgh and the inner ring of Allegheny County, keeping the city’s business, universities, hospitals, and cultural venues closely connected. Landmarks inside 412 include Point State Park, the Strip District, and major sports venues like PNC Park and Acrisure Stadium.
Area code 412 includes Pittsburgh and nearby communities such as:
These areas sit in Allegheny County and share close ties to the city’s jobs, schools, and transit. The code also covers key hubs like Oakland, home to Carnegie Mellon University and the University of Pittsburgh.
In 1998, the surrounding suburbs moved to 724 in a geographic split, while 412 stayed with the city and close-in suburbs. To add numbering capacity, the 878 overlay was introduced in 2001, and 10‑digit dialing became mandatory across the region; new 878 numbers began rolling out in 2013. Today, callers may see 412, 724, or 878 on caller ID when reaching the Pittsburgh metro. Locals often call the city “the 412,” a nod to the code’s deep roots and pride.
“Area code 412 was one of the original area codes created in 1947.” — North American Numbering Plan Administration (NANPA)