Area Code 605-258 located in AGAR, SULLY, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 258 City : AGAR County : SULLY State : SD (South Dakota) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 46119 LATA (Local Access Transport Area) : 640 Rate Center : ONIDA ZIP Code Count : 65 ZIP Code Frequency : 12 ZIP Code : 57520 Other Information NPANXX : 605258 County Population : 0 Switch CLLI (Common Language Location Identifier) : ONIDSDXCRS1 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : VENTURE COMMUNICATIONS COOPERATIVE OCN (Operating Company Number) : 1680 Coverage Area Name : ONIDA Latitude : 44.7083 Longitude : -100.0667 ‹ previous : 605-257 next › : 605-258 Telephone Number List 605-258-0000 ~ 605-258-9999