Area Code 309-428 located in PEORIA, PEORIA, IL, more detail is as below. Place NPA (Numbering Plan Area) : 309 NXX (Local Number Prefix) : 428 City : PEORIA County : PEORIA State : IL (Illinois) NXX Use Type : Wireless NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 17143 LATA (Local Access Transport Area) : 634 Rate Center : PEORIA ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 61606 Other Information NPANXX : 309428 County Population : 0 Switch CLLI (Common Language Location Identifier) : PEORILKJCM0 MSA CBSA (Core Based Statistical Area) : Peoria, IL MSA CBSA Code (Core Based Statistical Area) : 37900 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : PEORIA Latitude : 40.6927 Longitude : -89.5934 ‹ previous : 309-428 next › : 309-429 Telephone Number List 309-428-0000 ~ 309-428-9999