Area code 781 serves the suburbs surrounding Boston, Massachusetts, including cities such as Waltham, Lynn, Quincy, and Weymouth. It was created in 1997 from a split of the original 617 area code, which was limited to Boston itself. In 2001, area code 339 was introduced as an overlay to provide additional numbering capacity, and ten-digit dialing became mandatory. The 781 region includes residential, commercial, and tech-heavy corridors, playing a vital role in Greater Boston’s economy. While 617 represents the urban core, 781 is widely associated with suburban life and business expansion. It is often seen in regional branding and suburban real estate.