Area Code 605-237 located in WATERTOWN, CODINGTON, SD, more detail is as below. Place NPA (Numbering Plan Area) : 605 NXX (Local Number Prefix) : 237 City : WATERTOWN County : CODINGTON State : SD (South Dakota) NXX Use Type : Wireless NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 46029 LATA (Local Access Transport Area) : 640 Rate Center : WATERTOWN ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 57201 Other Information NPANXX : 605237 County Population : 0 Switch CLLI (Common Language Location Identifier) : WTTWSDADCM8 MSA CBSA (Core Based Statistical Area) : Watertown, SD MSA CBSA Code (Core Based Statistical Area) : 47980 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD OCN (Operating Company Number) : 6569 Coverage Area Name : WATERTOWN Latitude : 44.8985 Longitude : -97.1019 ‹ previous : 605-236 next › : 605-238 Telephone Number List 605-237-0000 ~ 605-237-9999