Area code 618

Telephone area code for southern Illinois

Area code 618 is an area code for Illinois. It was one of the first area codes created in 1947. It covers the entire southern portion of Illinois, consisting of cities such as Belleville, Fairview Heights, Carbondale, Cairo, Edwardsville, Collinsville, and Granite City. It will be overlaid by 730 in July 7, 2023, making it the last area code of Illinois to have an overlay.[1]

References change

  1. "Area Code 730 - Details, official location, official service date, history and time zone". www.areacodehelp.com. Retrieved 2022-10-10.