Area Code 605-247 located in WINFRED, LAKE, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 247 City : WINFRED County : LAKE State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46079 LATA (Local Access Transport Area) : 640 Rate Center : CENTER ZIP Code Count : 7 ZIP Code Frequency : 6 ZIP Code : 57076 Other Information NPANXX : 605247 County Population : 0 Switch CLLI (Common Language Location Identifier) : CNTRSDXADS1 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : MCCOOK COOPERATIVE TELEPHONE COMPANY OCN (Operating Company Number) : 1669 Coverage Area Name : SALEM Latitude : 43.8344 Longitude : -97.3345 ‹ previous : 605-247 next › : 605-247 Telephone Number List 605-247-0000 ~ 605-247-9999