Area Code 309-609 located in ALTONA, KNOX, IL, more detail is as below. Place NPA (Numbering Plan Area) : 309 NXX (Local Number Prefix) : 609 City : ALTONA County : KNOX State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 2006-06-01 FIPS (Federal Information Processing Standards) : 17095 LATA (Local Access Transport Area) : 977 Rate Center : ALTONA ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 61414 Other Information NPANXX : 309609 County Population : 0 Switch CLLI (Common Language Location Identifier) : MCMBILXDSMD MSA CBSA (Core Based Statistical Area) : Galesburg, IL MSA CBSA Code (Core Based Statistical Area) : 23660 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL OCN (Operating Company Number) : 846F Coverage Area Name : ALTONA Latitude : 41.1116 Longitude : -90.1639 ‹ previous : 309-606 next › : 309-613 Telephone Number List 309-609-0000 ~ 309-609-9999