Area Code 217-279 located in MARSHALL, CLARK, IL, more detail is as below. Place NPA (Numbering Plan Area) : 217 NXX (Local Number Prefix) : 279 City : MARSHALL County : CLARK State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 17023 LATA (Local Access Transport Area) : 938 Rate Center : WEST UNION ZIP Code Count : 8 ZIP Code Frequency : 2 ZIP Code : 62441 Other Information NPANXX : 217279 County Population : 0 Switch CLLI (Common Language Location Identifier) : WUNNILXCRS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : FRONTIER NORTH, INC. - IL OCN (Operating Company Number) : 1015 Coverage Area Name : WEST YORK Latitude : 39.2170 Longitude : -87.6643 ‹ previous : 217-279 next › : 217-279 Telephone Number List 217-279-0000 ~ 217-279-9999