Area Code 307-378 located in ROCK RIVER, ALBANY, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 378 City : ROCK RIVER County : ALBANY State : WY (Wyoming) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 56001 LATA (Local Access Transport Area) : 654 Rate Center : ROCK RIVER ZIP Code Count : 170 ZIP Code Frequency : 99 ZIP Code : 82083 Other Information NPANXX : 307378 County Population : 0 Switch CLLI (Common Language Location Identifier) : MNVWWYXCDS0 MSA CBSA (Core Based Statistical Area) : Laramie, WY MSA CBSA Code (Core Based Statistical Area) : 29660 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : UNION TELEPHONE CO. - WY OCN (Operating Company Number) : 2297 Coverage Area Name : ROCK RIVER Latitude : 41.7442 Longitude : -105.9739 ‹ previous : 307-377 next › : 307-379 Telephone Number List 307-378-0000 ~ 307-378-9999