Area Code 605-854 located in DE SMET, KINGSBURY, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 854 City : DE SMET County : KINGSBURY State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46077 LATA (Local Access Transport Area) : 640 Rate Center : DE SMET ZIP Code Count : 908 ZIP Code Frequency : 97 ZIP Code : 57231 Other Information NPANXX : 605854 Switch CLLI (Common Language Location Identifier) : DESMSDCORS1 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : QWEST CORPORATION OCN (Operating Company Number) : 9631 Coverage Area Name : DE SMET Latitude : 44.3826 Longitude : -97.5612 ‹ previous : 605-854 next › : 605-855 Telephone Number List 605-854-0000 ~ 605-854-9999