Area Code 309-531 located in BLOOMINGTON, MCLEAN, IL, more detail is as below. Place NPA (Numbering Plan Area) : 309 NXX (Local Number Prefix) : 531 City : BLOOMINGTON County : MCLEAN State : IL (Illinois) NXX Use Type : Wireless NXX Intro Version : 1997-04-01 FIPS (Federal Information Processing Standards) : 17113 LATA (Local Access Transport Area) : 366 Rate Center : BLOOMINGTN ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 61704 Other Information NPANXX : 309531 County Population : 0 Switch CLLI (Common Language Location Identifier) : BLTNILXDUMD MSA CBSA (Core Based Statistical Area) : Bloomington-Normal, IL MSA CBSA Code (Core Based Statistical Area) : 14060 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : BLOOMINGTON Latitude : 40.4820 Longitude : -88.9963 ‹ previous : 309-530 next › : 309-532 Telephone Number List 309-531-0000 ~ 309-531-9999