Area Code 435-207 located in TREMONTON, BOX ELDER, UT, more detail is as below. Place NPA (Numbering Plan Area) : 435 NXX (Local Number Prefix) : 207 City : TREMONTON County : BOX ELDER State : UT (Utah) NXX Use Type : Landline NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 49003 LATA (Local Access Transport Area) : 660 Rate Center : TREMONTON ZIP Code Count : 6 ZIP Code Frequency : 86 ZIP Code : 84337 Other Information NPANXX : 435207 County Population : 0 Switch CLLI (Common Language Location Identifier) : TRMNUTXCDS0 MSA CBSA (Core Based Statistical Area) : Brigham City, UT MSA CBSA Code (Core Based Statistical Area) : 14940 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : CITIZENS TELECOM-UTAH DBA FRONTIER COMM OF UT OCN (Operating Company Number) : 4429 Coverage Area Name : TREMONTON Latitude : 41.7171 Longitude : -112.1744 ‹ previous : 435-207 next › : 435-209 Telephone Number List 435-207-0000 ~ 435-207-9999