Area Code 307-255 located in EVANSTON, UINTA, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 255 City : EVANSTON County : UINTA State : WY (Wyoming) NXX Use Type : Wireless NXX Intro Version : 2002-10-25 FIPS (Federal Information Processing Standards) : 56041 LATA (Local Access Transport Area) : 654 Rate Center : EVANSTON ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 82930 Other Information NPANXX : 307255 County Population : 0 Switch CLLI (Common Language Location Identifier) : EVTNWYBHW00 MSA CBSA (Core Based Statistical Area) : Evanston, WY MSA CBSA Code (Core Based Statistical Area) : 21740 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : UINTAH BASIN ELECTRONIC TELECOMMUNICATIONS OCN (Operating Company Number) : 1772 Coverage Area Name : EVANSTON Latitude : 41.2677 Longitude : -110.9671 ‹ previous : 307-254 next › : 307-256 Telephone Number List 307-255-0000 ~ 307-255-9999