Find any 309- phone number in Illinois

The 309 area code is an area code used in parts of Illinois, USA. This area code was created in 2001 and covers an area that includes the northwest corner of the state, including the cities of Peoria, Bloomington-Normal, Galesburg, Kewanee, and Canton. The code came about as a result of population growth in the area and the need for more phone numbers.

The North American Numbering Plan (NANP) is the numbering system that designates the 309 area code. The NANP is a system of numbering plan areas used to assign phone numbers in the United States, Canada, and some Caribbean countries. Each area code is assigned a three-digit number and is used to callers within the same geographic region. The NANP is managed by the North American Numbering Plan Administration and is updated quarterly to ensure service and number availability.