Area Code 307-939 located in GILLETTE, CAMPBELL, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 939 City : GILLETTE County : CAMPBELL State : WY (Wyoming) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 56005 LATA (Local Access Transport Area) : 654 Rate Center : WRIGHT ZIP Code Count : 48 ZIP Code Frequency : 76 ZIP Code : 82718 Other Information NPANXX : 307939 County Population : 0 Switch CLLI (Common Language Location Identifier) : WRGHWYMARS1 MSA CBSA (Core Based Statistical Area) : Gillette, WY MSA CBSA Code (Core Based Statistical Area) : 23940 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : QWEST CORPORATION OCN (Operating Company Number) : 9636 Coverage Area Name : GILLETTE Latitude : 43.7578 Longitude : -105.4838 ‹ previous : 307-939 next › : 307-941 Telephone Number List 307-939-0000 ~ 307-939-9999