Area Code 605-535 located in HOT SPRINGS, FALL RIVER, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 535 City : HOT SPRINGS County : FALL RIVER State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46047 LATA (Local Access Transport Area) : 640 Rate Center : OELRICHS ZIP Code Count : 5 ZIP Code Frequency : 3 ZIP Code : 57747 Other Information NPANXX : 605535 County Population : 0 Switch CLLI (Common Language Location Identifier) : OLRCSDXARS4 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : GOLDEN WEST TEL COOP INC DBA GOLDEN WEST TELECOMM OCN (Operating Company Number) : 1659 Coverage Area Name : OELRICHS Latitude : 43.1749 Longitude : -103.2346 ‹ previous : 605-534 next › : 605-535 Telephone Number List 605-535-0000 ~ 605-535-9999