Area Code 307-209 located in EVANSTON, UINTA, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 209 City : EVANSTON County : UINTA State : WY (Wyoming) FIPS (Federal Information Processing Standards) : 56041 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 : 307209 County Population : 0 Switch CLLI (Common Language Location Identifier) : CSPRWYDHDS0 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 Latitude : None Longitude : None ‹ previous : 307-208 next › : 307-210 Telephone Number List 307-209-0000 ~ 307-209-9999