Area Code 406-275 located in POLSON, LAKE, MT, more detail is as below. Place NPA (Numbering Plan Area) : 406 NXX (Local Number Prefix) : 275 City : POLSON County : LAKE State : MT (Montana) NXX Use Type : Landline NXX Intro Version : 1996-04-15 FIPS (Federal Information Processing Standards) : 30047 LATA (Local Access Transport Area) : 648 Rate Center : PABLO ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 59860 Other Information NPANXX : 406275 Switch CLLI (Common Language Location Identifier) : FHIRMT01RS0 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : RONAN TELEPHONE CO. OCN (Operating Company Number) : 2252 Coverage Area Name : RONAN Latitude : 47.5857 Longitude : -114.0485 ‹ previous : 406-275 next › : 406-276 Telephone Number List 406-275-0000 ~ 406-275-9999