309 is the North American Telephone Area Code For Illinois in United States.
309-200 Mclean Bloomington, IL Ymax Communications Corp.
309-208 Peoria Peoria, IL Sprint Spectrum L.p.
There are 634 prefixes, In the code area, the major cities are Bloomington, IL;East Moline, IL;East Peoria, IL;Ga. The major city is Peoria.