Geographic Regions and Area Codes

Area Code 730 is a newly introduced overlay for the existing 618 area code in southern Illinois. This region includes a diverse range of cities and communities, making it a vibrant area for business operations. Key cities in this region are:

  • Carbondale
  • Cairo
  • Belleville
  • East St. Louis
  • Edwardsville
  • Marion
  • O'Fallon
  • Alton
  • Mt. Vernon
  • Centralia
  • Herrin
  • Salem
  • Metropolis
  • Fairview Heights
  • Collinsville
  • Granite City

Both area codes 618 and 730 serve the same geographic region, and residents will need to dial 10 digits for local calls.