Area Code 307-437 located in LINCH, JOHNSON, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 437 City : LINCH County : JOHNSON State : WY (Wyoming) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 56019 LATA (Local Access Transport Area) : 654 Rate Center : MIDWEST ZIP Code Count : 11 ZIP Code Frequency : 4 ZIP Code : 82640 Other Information NPANXX : 307437 County Population : 0 Switch CLLI (Common Language Location Identifier) : MDWSWYXCRS1 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : RT COMMUNICATIONS OCN (Operating Company Number) : 3410 Coverage Area Name : MIDWEST Latitude : 43.4109 Longitude : -106.2770 ‹ previous : 307-437 next › : 307-437 Telephone Number List 307-437-0000 ~ 307-437-9999