The area code 309 is located in Bloomington, Illinois.
Area code 309 serves the central part of Illinois, prominently featuring Bloomington and its neighboring cities. Key cities included in this area code are:
Established in 1996, area code 309 has been vital in connecting the communities of this vibrant region. Bloomington is not only known for its rich history but also homes the McLean County Museum of History, which showcases the area’s heritage. In 2010, the city was recognized as one of the best places to live in the U.S. according to Money magazine, highlighting its strong community and quality of life.