Area Code 618-204 located in OPDYKE, JEFFERSON, IL, more detail is as below. Place NPA (Numbering Plan Area) : 618 NXX (Local Number Prefix) : 204 City : OPDYKE County : JEFFERSON State : IL (Illinois) NXX Use Type : Wireless NXX Intro Version : 2000-08-20 FIPS (Federal Information Processing Standards) : 17081 LATA (Local Access Transport Area) : 520 Rate Center : MT VERNON ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 62872 Other Information NPANXX : 618204 Switch CLLI (Common Language Location Identifier) : MTVRILBF0MD MSA CBSA (Core Based Statistical Area) : Mount Vernon, IL MSA CBSA Code (Core Based Statistical Area) : 34500 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : SPRINT SPECTRUM L.P. OCN (Operating Company Number) : 6664 Coverage Area Name : MOUNT VERNON Latitude : 38.3132 Longitude : -88.9061 ‹ previous : 618-203 next › : 618-204 Telephone Number List 618-204-0000 ~ 618-204-9999