Area Code 307-469 located in HYATTVILLE, BIG HORN, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 469 City : HYATTVILLE County : BIG HORN State : WY (Wyoming) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 56003 LATA (Local Access Transport Area) : 654 Rate Center : HYATTVILLE ZIP Code Count : 90 ZIP Code Frequency : 78 ZIP Code : 82428 Other Information NPANXX : 307469 County Population : 0 Switch CLLI (Common Language Location Identifier) : HYVLWYXCRS1 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : TRI - COUNTY TELEPHONE ASSOCIATION, INC. OCN (Operating Company Number) : 2296 Coverage Area Name : HYATTVILLE Latitude : 44.2487 Longitude : -107.6004 ‹ previous : 307-469 next › : 307-472 Telephone Number List 307-469-0000 ~ 307-469-9999