Area Code 307-352 located in GREEN RIVER, SWEETWATER, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 352 City : GREEN RIVER County : SWEETWATER State : WY (Wyoming) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 56037 LATA (Local Access Transport Area) : 654 Rate Center : ROCK SPG ZIP Code Count : 20 ZIP Code Frequency : 8 ZIP Code : 82935 Other Information NPANXX : 307352 County Population : 0 Switch CLLI (Common Language Location Identifier) : RCSPWYMADS0 MSA CBSA (Core Based Statistical Area) : Rock Springs, WY MSA CBSA Code (Core Based Statistical Area) : 40540 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : QWEST CORPORATION OCN (Operating Company Number) : 9636 Coverage Area Name : ROCK SPRINGS Latitude : 41.5821 Longitude : -109.2161 ‹ previous : 307-351 next › : 307-352 Telephone Number List 307-352-0000 ~ 307-352-9999