Area Code 715-203 located in WAUSAU, MARATHON, WI, more detail is as below. Place NPA (Numbering Plan Area) : 715 NXX (Local Number Prefix) : 203 City : WAUSAU County : MARATHON State : WI (Wisconsin) NXX Use Type : Landline NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 55073 LATA (Local Access Transport Area) : 350 Rate Center : WAUSAU ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 54401 Other Information NPANXX : 715203 Switch CLLI (Common Language Location Identifier) : GNBYWIELBMD MSA CBSA (Core Based Statistical Area) : Wausau, WI MSA CBSA Code (Core Based Statistical Area) : 48140 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : LEVEL 3 COMMUNICATIONS, LLC - WI OCN (Operating Company Number) : 5489 Coverage Area Name : WAUSAU Latitude : 44.9510 Longitude : -89.6197 ‹ previous : 715-202 next › : 715-204 Telephone Number List 715-203-0000 ~ 715-203-9999