Area Code 605-631 located in DEADWOOD, LAWRENCE, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 631 City : DEADWOOD County : LAWRENCE State : SD (South Dakota) NXX Use Type : Wireless NXX Intro Version : 1997-07-06 FIPS (Federal Information Processing Standards) : 46081 LATA (Local Access Transport Area) : 640 Rate Center : DEADWOOD ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 57732 Other Information NPANXX : 605631 County Population : 0 Switch CLLI (Common Language Location Identifier) : SXFLSDTUCM0 MSA CBSA (Core Based Statistical Area) : Spearfish, SD MSA CBSA Code (Core Based Statistical Area) : 43940 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD OCN (Operating Company Number) : 6569 Coverage Area Name : DEADWOOD Latitude : 44.3835 Longitude : -103.7054 ‹ previous : 605-630 next › : 605-632 Telephone Number List 605-631-0000 ~ 605-631-9999