Area Code 618-485 located in DU BOIS, WASHINGTON, IL, more detail is as below. Place NPA (Numbering Plan Area) : 618 NXX (Local Number Prefix) : 485 City : DU BOIS County : WASHINGTON State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 17189 LATA (Local Access Transport Area) : 520 Rate Center : ASHLEY ZIP Code Count : 29 ZIP Code Frequency : 5 ZIP Code : 62831 Other Information NPANXX : 618485 Switch CLLI (Common Language Location Identifier) : ASHYILXERS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL OCN (Operating Company Number) : 1183 Coverage Area Name : ASHLEY Latitude : 38.3291 Longitude : -89.1907 ‹ previous : 618-485 next › : 618-485 Telephone Number List 618-485-0000 ~ 618-485-9999