Area Code 309-594 located in NEPONSET, BUREAU, IL, more detail is as below. Place NPA (Numbering Plan Area) : 309 NXX (Local Number Prefix) : 594 City : NEPONSET County : BUREAU State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 17011 LATA (Local Access Transport Area) : 368 Rate Center : NEPONSET ZIP Code Count : 292 ZIP Code Frequency : 79 ZIP Code : 61345 Other Information NPANXX : 309594 County Population : 0 Switch CLLI (Common Language Location Identifier) : NPNSILXDDS0 MSA CBSA (Core Based Statistical Area) : Ottawa-Streator, IL MSA CBSA Code (Core Based Statistical Area) : 36860 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : FRONTIER NORTH, INC. - IL OCN (Operating Company Number) : 1015 Coverage Area Name : NEPONSET Latitude : 41.2965 Longitude : -89.7908 ‹ previous : 309-594 next › : 309-595 Telephone Number List 309-594-0000 ~ 309-594-9999