Geographic Regions and Area Codes

Area code 315 serves the central part of New York State, covering a large area that includes major cities such as Syracuse, Utica, and Watertown. This area code touches 16 counties, including:

  • Onondaga
  • Oneida
  • St. Lawrence
  • Oswego
  • Jefferson
  • Madison
  • Cayuga
  • Herkimer
  • Wayne
  • Lewis

The 315 area code has an overlay area code of 680, meaning both area codes cover the same geographic region. Nearby area codes include 343/613 (Ottawa, ON), 450/579 (Granby, QC), 518/838 (Albany, NY), 585 (Rochester, NY), 607 (Binghamton, NY), and 819/873 (Sherbrooke, QC).