Area code 412 serves Pittsburgh and its immediate suburbs in southwestern Pennsylvania. As one of the original area codes established in 1947, 412 has long been associated with the steel industry, labor history, and the economic transformation of western Pennsylvania. Today, Pittsburgh is known for its healthcare, robotics, education, and finance sectors. Overlays with 724 and 878 have made ten-digit dialing standard. Despite changes, 412 retains a legacy cachet, frequently used in sports, culture, and civic identity to represent the rebirth of a classic American industrial city.