Area code 309
Area code 309 is a telephone area code serving the west-central portion of Illinois. Cities in this area code include Bloomington, Canton, East Moline, East Peoria, Galesburg, Kewanee, Macomb, Minonk, Moline, Morton, Normal, Pekin, Peoria Rock Island, and Silvis, in addition to many smaller communities within the western part of central Illinois.
The area code was created in 1957 out of the northern portion of 217 and the western portion of 815.