Area Code 605-407 located in MARTIN, BENNETT, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 407 City : MARTIN County : BENNETT State : SD (South Dakota) NXX Use Type : Wireless NXX Intro Version : 3/2/2009 FIPS (Federal Information Processing Standards) : 46007 LATA (Local Access Transport Area) : 640 Rate Center : MARTIN ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 57551 Other Information NPANXX : 605407 County Population : 0 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : MARTIN Latitude : 43.1761 Longitude : -101.7420 ‹ previous : 605-400 next › : 605-408 Telephone Number List 605-407-0000 ~ 605-407-9999