Area Code 307-232 located in EVANSVILLE, NATRONA, WY, more detail is as below. Place NPA (Numbering Plan Area) : 307 NXX (Local Number Prefix) : 232 City : EVANSVILLE County : NATRONA State : WY (Wyoming) NXX Use Type : Landline NXX Intro Version : 2000-10-31 FIPS (Federal Information Processing Standards) : 56025 LATA (Local Access Transport Area) : 654 Rate Center : CASPER ZIP Code Count : 39 ZIP Code Frequency : 5 ZIP Code : 82636 Other Information NPANXX : 307232 County Population : 0 Switch CLLI (Common Language Location Identifier) : CSPRWYMADS0 MSA CBSA (Core Based Statistical Area) : Casper, WY MSA CBSA Code (Core Based Statistical Area) : 16220 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : QWEST CORPORATION OCN (Operating Company Number) : 9636 Coverage Area Name : CASPER Latitude : 42.8502 Longitude : -106.3229 ‹ previous : 307-232 next › : 307-232 Telephone Number List 307-232-0000 ~ 307-232-9999