Area Code 307-320 located in RAWLINS, CARBON, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 320 City : RAWLINS County : CARBON State : WY (Wyoming) NXX Use Type : Wireless NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 56007 LATA (Local Access Transport Area) : 654 Rate Center : RAWLINS ZIP Code Count : 449 ZIP Code Frequency : 100 ZIP Code : 82301 Other Information NPANXX : 307320 County Population : 0 Switch CLLI (Common Language Location Identifier) : MNVWWYXCCM1 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : UNION TELEPHONE COMPANY OCN (Operating Company Number) : 013B Coverage Area Name : RAWLINS Latitude : 41.7890 Longitude : -107.2320 ‹ previous : 307-316 next › : 307-321 Telephone Number List 307-320-0000 ~ 307-320-9999