Area code 413 serves all of western Massachusetts, including cities like Springfield, Pittsfield, Holyoke, and Greenfield. It is one of the original area codes established in 1947 and has retained its geographic boundaries without any splits or overlays. The region is known for its historic towns, scenic beauty in the Berkshires, and major institutions like UMass Amherst and Smith College. With a mix of rural charm and academic excellence, 413 is a deeply rooted symbol of western Massachusetts identity. It remains one of the few standalone area codes in the state, and seven-digit dialing is still permitted in many places.