Area Code 605-243 located in CORSICA, DOUGLAS, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 243 City : CORSICA County : DOUGLAS State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46043 LATA (Local Access Transport Area) : 640 Rate Center : NEWHOLLAND ZIP Code Count : 36 ZIP Code Frequency : 26 ZIP Code : 57328 Other Information NPANXX : 605243 County Population : 0 Switch CLLI (Common Language Location Identifier) : NHLDSDXADS1 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : MIDSTATE COMMUNICATIONS, INC. OCN (Operating Company Number) : 1670 Coverage Area Name : STICKNEY Latitude : 43.4244 Longitude : -98.5989 ‹ previous : 605-242 next › : 605-243 Telephone Number List 605-243-0000 ~ 605-243-9999