Area Code 309-305 located in STANFORD, MCLEAN, IL, more detail is as below. Place NPA (Numbering Plan Area) : 309 NXX (Local Number Prefix) : 305 City : STANFORD County : MCLEAN State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 2005-03-27 FIPS (Federal Information Processing Standards) : 17113 LATA (Local Access Transport Area) : 366 Rate Center : MINIERAGTN ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 61774 Other Information NPANXX : 309305 County Population : 0 Switch CLLI (Common Language Location Identifier) : BLTNILXDZMD 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 : SPRINT COMMUNICATIONS COMPANY, L.P. - IL OCN (Operating Company Number) : 8721 Coverage Area Name : MINIER Latitude : 40.4341 Longitude : -89.3103 ‹ previous : 309-305 next › : 309-306 Telephone Number List 309-305-0000 ~ 309-305-9999