Area Code 319-935 located in WINTHROP, BUCHANAN, IA, more detail is as below. Place NPA (Numbering Plan Area) : 319 NXX (Local Number Prefix) : 935 City : WINTHROP County : BUCHANAN State : IA (Iowa) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 19019 LATA (Local Access Transport Area) : 635 Rate Center : WINTHROP ZIP Code Count : 542 ZIP Code Frequency : 90 ZIP Code : 50682 Other Information NPANXX : 319935 County Population : 0 Switch CLLI (Common Language Location Identifier) : WNTHIAXODS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : EAST BUCHANAN TELEPHONE COOPERATIVE OCN (Operating Company Number) : 1156 Coverage Area Name : WINTHROP Latitude : 42.4737 Longitude : -91.7298 ‹ previous : 319-935 next › : 319-936 Telephone Number List 319-935-0000 ~ 319-935-9999