Area Code 309 Illinois, USA

WhereCall is here to provide you with the most information on the area code 309, located in Illinois, USA. This area code contains 662 prefixes and is not in jeopardy of exceeding the known supply of central office codes during the planning/implementation interval for relief.

NPA Information
Area Code (NPA)309
LocationIllinois, USA
In Jeopardy?No
Is Assigned?Yes
Assignment Date01 Jan 1957
In Service?Yes
In Service Date01 Jan 1957
Predominant Timezone(s)UTC-06:00
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