Area code 315 serves north-central New York, including Syracuse, Utica, and Watertown. It was one of the original area codes established in 1947 and covers a large geographic area characterized by a mix of mid-sized cities, rural communities, and historical significance. In 2017, it was overlaid with area code 680, making ten-digit dialing mandatory. The region includes major universities, military bases, and industries ranging from agriculture to high tech. Area code 315 symbolizes upstate New York’s blend of tradition, education, and resilience, offering a strong regional identity amid economic transition.