Area Code 309-373 located in MILAN, ROCK ISLAND, IL, more detail is as below. Place NPA (Numbering Plan Area) : 309 NXX (Local Number Prefix) : 373 City : MILAN County : ROCK ISLAND State : IL (Illinois) NXX Use Type : Wireless NXX Intro Version : 2001-03-03 FIPS (Federal Information Processing Standards) : 17161 LATA (Local Access Transport Area) : 634 Rate Center : ROCKISLAND ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 61264 Other Information NPANXX : 309373 County Population : 0 Switch CLLI (Common Language Location Identifier) : MOLNILCT0MD MSA CBSA (Core Based Statistical Area) : Davenport-Moline-Rock Island, IA-IL MSA CBSA Code (Core Based Statistical Area) : 19340 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : UNITED STATES CELLULAR CORP. - ILLINOIS OCN (Operating Company Number) : 6265 Coverage Area Name : ROCK ISLAND Latitude : 41.5079 Longitude : -90.5753 ‹ previous : 309-372 next › : 309-373 Telephone Number List 309-373-0000 ~ 309-373-9999