Area Code 605-327 located in IRENE, CLAY, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 327 City : IRENE County : CLAY State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46027 LATA (Local Access Transport Area) : 640 Rate Center : FLYGER ZIP Code Count : 26 ZIP Code Frequency : 11 ZIP Code : 57037 Other Information NPANXX : 605327 County Population : 0 Switch CLLI (Common Language Location Identifier) : VBRGSDAADS0 MSA CBSA (Core Based Statistical Area) : Vermillion, SD MSA CBSA Code (Core Based Statistical Area) : 46820 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : KNOLOGY COMMUNITY TELEPHONE, INC. OCN (Operating Company Number) : 1652 Coverage Area Name : VIBORG Latitude : 43.1738 Longitude : -97.0696 ‹ previous : 605-327 next › : 605-327 Telephone Number List 605-327-0000 ~ 605-327-9999