Area Code 605-240 located in SALEM, MCCOOK, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 240 City : SALEM County : MCCOOK State : SD (South Dakota) NXX Use Type : Wireless NXX Intro Version : 2005-03-27 FIPS (Federal Information Processing Standards) : 46087 LATA (Local Access Transport Area) : 640 Rate Center : SALEM ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 57058 Other Information NPANXX : 605240 County Population : 0 Switch CLLI (Common Language Location Identifier) : SXFLSDQACM1 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 : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : SALEM Latitude : 43.7235 Longitude : -97.3815 ‹ previous : 605-239 next › : 605-241 Telephone Number List 605-240-0000 ~ 605-240-9999