Area Code 605-527 located in LETCHER, SANBORN, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 527 City : LETCHER County : SANBORN State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46111 LATA (Local Access Transport Area) : 640 Rate Center : ARTESIAN ZIP Code Count : 5 ZIP Code Frequency : 2 ZIP Code : 57359 Other Information NPANXX : 605527 County Population : 0 Switch CLLI (Common Language Location Identifier) : ARTSSDXA52G Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : SANTEL COMMUNICATIONS COOPERATIVE, INC.-SD OCN (Operating Company Number) : 1676 Coverage Area Name : ARTESIAN Latitude : 44.0081 Longitude : -97.9223 ‹ previous : 605-527 next › : 605-527 Telephone Number List 605-527-0000 ~ 605-527-9999