Area Code 605-860 located in DE SMET, KINGSBURY, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 860 City : DE SMET County : KINGSBURY State : SD (South Dakota) NXX Use Type : Wireless NXX Intro Version : 1995-02-11 FIPS (Federal Information Processing Standards) : 46077 LATA (Local Access Transport Area) : 640 Rate Center : DE SMET ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 57231 Other Information NPANXX : 605860 Switch CLLI (Common Language Location Identifier) : SXFLSDTUCM0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD OCN (Operating Company Number) : 6569 Coverage Area Name : DE SMET Latitude : 44.3826 Longitude : -97.5612 ‹ previous : 605-859 next › : 605-861 Telephone Number List 605-860-0000 ~ 605-860-9999