Area Code 309-378 located in BLOOMINGTON, MCLEAN, IL, more detail is as below. Place NPA (Numbering Plan Area) : 309 NXX (Local Number Prefix) : 378 City : BLOOMINGTON County : MCLEAN State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 17113 LATA (Local Access Transport Area) : 366 Rate Center : DOWNS ZIP Code Count : 544 ZIP Code Frequency : 57 ZIP Code : 61704 Other Information NPANXX : 309378 County Population : 0 Switch CLLI (Common Language Location Identifier) : DWNSILXDRS0 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 : FRONTIER NORTH, INC. - IL OCN (Operating Company Number) : 1015 Coverage Area Name : DOWNS Latitude : 40.3965 Longitude : -88.8710 ‹ previous : 309-378 next › : 309-379 Telephone Number List 309-378-0000 ~ 309-378-9999