Area Code 618-266 located in TEXICO, JEFFERSON, IL, more detail is as below. Place NPA (Numbering Plan Area) : 618 NXX (Local Number Prefix) : 266 City : TEXICO County : JEFFERSON State : IL (Illinois) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 17081 LATA (Local Access Transport Area) : 520 Rate Center : DIX ZIP Code Count : 97 ZIP Code Frequency : 14 ZIP Code : 62889 Other Information NPANXX : 618266 Switch CLLI (Common Language Location Identifier) : KELLILKLRS0 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 : AMERITECH ILLINOIS OCN (Operating Company Number) : 9329 Coverage Area Name : KELL Latitude : 38.4909 Longitude : -88.9093 ‹ previous : 618-266 next › : 618-266 Telephone Number List 618-266-0000 ~ 618-266-9999