309 Area Code: Cities, Time Zone and Zip Codes
What area code is 309? The area code 309 is located in Illinois and it serves Peoria, Bloomington, Normal, Moline, Rock Island, Pekin, Galesburg, East Peoria, East Peoria, East Moline, and some other surrounding cities. The area code 309 was created on January 1, 1957, and was first put to use on January 1, 1957.