Area Code 605-246 located in SPENCER, MCCOOK, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 246 City : SPENCER County : MCCOOK State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46087 LATA (Local Access Transport Area) : 640 Rate Center : SPENCER ZIP Code Count : 136 ZIP Code Frequency : 76 ZIP Code : 57374 Other Information NPANXX : 605246 County Population : 0 Switch CLLI (Common Language Location Identifier) : SPNCSDXADS1 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 : MCCOOK COOPERATIVE TELEPHONE COMPANY OCN (Operating Company Number) : 1669 Coverage Area Name : SPENCER Latitude : 43.7246 Longitude : -97.5918 ‹ previous : 605-246 next › : 605-247 Telephone Number List 605-246-0000 ~ 605-246-9999