Area Code 307-702 located in CASPER, NATRONA, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 702 City : CASPER County : NATRONA State : WY (Wyoming) NXX Use Type : Wireless NXX Intro Version : 2003-08-31 FIPS (Federal Information Processing Standards) : 56025 LATA (Local Access Transport Area) : 654 Rate Center : CASPER ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 82604 Other Information NPANXX : 307702 County Population : 0 Switch CLLI (Common Language Location Identifier) : MNVWWYXCCM2 MSA CBSA (Core Based Statistical Area) : Casper, WY MSA CBSA Code (Core Based Statistical Area) : 16220 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : UNION TELEPHONE COMPANY OCN (Operating Company Number) : 013B Coverage Area Name : CASPER Latitude : 42.8413 Longitude : -106.3263 ‹ previous : 307-701 next › : 307-702 Telephone Number List 307-702-0000 ~ 307-702-9999