Area Code 307-529 located in CHEYENNE, LARAMIE, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 529 City : CHEYENNE County : LARAMIE State : WY (Wyoming) NXX Use Type : Landline NXX Intro Version : 8/25/2009 FIPS (Federal Information Processing Standards) : 56021 LATA (Local Access Transport Area) : 654 Rate Center : CHEYENNE ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 82007 Other Information NPANXX : 307529 County Population : 0 MSA CBSA (Core Based Statistical Area) : Cheyenne, WY MSA CBSA Code (Core Based Statistical Area) : 16940 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : YMAX COMMUNICATIONS CORP. - WY OCN (Operating Company Number) : 370E Coverage Area Name : CHEYENNE Latitude : 41.1338 Longitude : -104.8168 ‹ previous : 307-528 next › : 307-532 Telephone Number List 307-529-0000 ~ 307-529-9999