Area Code 605-263 located in YANKTON, YANKTON, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 263 City : YANKTON County : YANKTON State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46135 LATA (Local Access Transport Area) : 640 Rate Center : IRENE ZIP Code Count : 25 ZIP Code Frequency : 5 ZIP Code : 57078 Other Information NPANXX : 605263 County Population : 0 Switch CLLI (Common Language Location Identifier) : IRENSDXARS1 MSA CBSA (Core Based Statistical Area) : Yankton, SD MSA CBSA Code (Core Based Statistical Area) : 49460 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : KNOLOGY COMMUNITY TELEPHONE, INC. OCN (Operating Company Number) : 1652 Coverage Area Name : IRENE Latitude : 43.0836 Longitude : -97.1525 ‹ previous : 605-263 next › : 605-263 Telephone Number List 605-263-0000 ~ 605-263-9999