Geographic Regions and Area Codes

Area Code 513 is located in the southwestern part of Ohio, covering a significant portion of the state. It includes major cities such as Cincinnati, Hamilton, Middletown, Fairfield, and Mason, as well as numerous smaller communities like Norwood, Forest Park, Lebanon, West Chester, and Oxford. The area code spans across six counties: Hamilton, Butler, Warren, Clermont, and Preble. Due to the exhaustion of available numbers, area code 283 was introduced in April 2023 to serve the same geographic region.

Key regions and their area codes:

  • Cincinnati (513, 283)
  • Hamilton (513, 283)
  • Middletown (513, 283)
  • Fairfield (513, 283)
  • Mason (513, 283)