Area Code 605-274 located in SIOUX FALLS, LINCOLN, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 274 City : SIOUX FALLS County : LINCOLN State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 46083 LATA (Local Access Transport Area) : 640 Rate Center : SIOUX FLS ZIP Code Count : 8 ZIP Code Frequency : 11 ZIP Code : 57108 Other Information NPANXX : 605274 County Population : 0 Switch CLLI (Common Language Location Identifier) : SXFLSDPSDS0 MSA CBSA (Core Based Statistical Area) : Sioux Falls, SD MSA CBSA Code (Core Based Statistical Area) : 43620 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : MIDCONTINENT COMMUNICATIONS - SD OCN (Operating Company Number) : 7076 Coverage Area Name : SIOUX FALLS Latitude : 43.5452 Longitude : -96.7240 ‹ previous : 605-274 next › : 605-274 Telephone Number List 605-274-0000 ~ 605-274-9999