Area Code 605-273 located in MC INTOSH, CORSON, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 273 City : MC INTOSH County : CORSON State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46031 LATA (Local Access Transport Area) : 640 Rate Center : MCINTOSH ZIP Code Count : 111 ZIP Code Frequency : 91 ZIP Code : 57641 Other Information NPANXX : 605273 County Population : 0 Switch CLLI (Common Language Location Identifier) : MCINSDCODS0 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : QWEST CORPORATION OCN (Operating Company Number) : 9631 Coverage Area Name : MC INTOSH Latitude : 45.9229 Longitude : -101.3532 ‹ previous : 605-273 next › : 605-274 Telephone Number List 605-273-0000 ~ 605-273-9999