Area Code 920-439 located in CHILTON, CALUMET, WI, more detail is as below. Place NPA (Numbering Plan Area) : 920 NXX (Local Number Prefix) : 439 City : CHILTON County : CALUMET State : WI (Wisconsin) NXX Use Type : Landline NXX Intro Version : 1997-07-06 FIPS (Federal Information Processing Standards) : 55015 LATA (Local Access Transport Area) : 350 Rate Center : STOCKBDG ZIP Code Count : 292 ZIP Code Frequency : 41 ZIP Code : 53014 Other Information NPANXX : 920439 Switch CLLI (Common Language Location Identifier) : STBRWIXARS0 MSA CBSA (Core Based Statistical Area) : Appleton, WI MSA CBSA Code (Core Based Statistical Area) : 11540 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : STOCKBRIDGE & SHERWOOD TELEPHONE CO. OCN (Operating Company Number) : 0954 Coverage Area Name : CHILTON Latitude : 44.0775 Longitude : -88.3021 ‹ previous : 920-439 next › : 920-440 Telephone Number List 920-439-0000 ~ 920-439-9999