Area codes 315 and 680


Area codes 315 and 680 are telephone area codes of the North American Numbering Plan for the north-central area of the U.S. state of New York. The overlay numbering plan area extends from the western side of Wayne County to Little Falls, north to the Canada–United States border, east to Massena and south to near Cortland. Most of the area's population lives in Syracuse and its suburbs. Other major population areas include Utica and Watertown.
Area code 315 was one of the original area codes created in 1947. The overlay plan was created in 2017 by assigning area code 680 as the second code for the numbering plan area.

History

Area code 315 was one of the original area codes created in 1947, when it was assigned to a numbering plan area that extended from the Canadian border with Ontario and Quebec southward to the Pennsylvania state line, including the Syracuse and Binghamton areas. During 1954, its southern portion, including Binghamton, was combined with the southeastern corner of numbering plan area 716 in an area code split that created area code 607.
New York State regulators announced that 315 was threatened by numbering exhaustion for the third quarter of 2010. The New York State Public Service Commission at the time weighed two options, an overlay plan or a split plan. A numbering plan area division would have included a north-south arrangement, dividing Oswego County and the north from 315, or an east-west division, with Oswego and Onondaga forming the boundary. Regulators met to discuss a second code in the 315 region. Due to economic conditions, assignable numbers were not depleted during the third quarter of 2010 as projected. The revised exhaustion was estimated for 2017. On March 11, 2017, area code 680 was introduced, creating the first overlay in the upstate region.
Since 2017, telephone callers must dial ten digits for local calls; attempts to make a seven-digit call activates an intercept message reminding them of the new rule.

Service area

Counties

Cities, towns, villages, and hamlets