Area code 315 serves central and northern New York, including cities such as Syracuse, Utica, Rome, and Watertown. It is one of the original area codes created in 1947 and was overlaid by area code 680 in 2017 to ensure a continued supply of numbers. The region encompasses a diverse mix of urban centers, military bases, rural communities, and recreational destinations such as the Adirondack Mountains. It plays a vital role in education, with institutions like Syracuse University, and in government, agriculture, and manufacturing. 315 is a long-standing area code that remains central to the identity of central New York.