Area Code 435-203 located in MOUNT PLEASANT, SANPETE, UT, more detail is as below. Place NPA (Numbering Plan Area) : 435 NXX (Local Number Prefix) : 203 City : MOUNT PLEASANT County : SANPETE State : UT (Utah) NXX Use Type : Landline NXX Intro Version : 1999-02-27 FIPS (Federal Information Processing Standards) : 49039 LATA (Local Access Transport Area) : 660 Rate Center : MTPLEASANT ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 84647 Other Information NPANXX : 435203 County Population : 0 Switch CLLI (Common Language Location Identifier) : SLKCUTMADS4 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Company : PAC - WEST TELECOMM, INC. - UT OCN (Operating Company Number) : 2106 Coverage Area Name : MT PLEASANT Latitude : 39.5495 Longitude : -111.4517 ‹ previous : 435-202 next › : 435-204 Telephone Number List 435-203-0000 ~ 435-203-9999