Area Code 319-934 located in WINTHROP, BUCHANAN, IA, more detail is as below. Place NPA (Numbering Plan Area) : 319 NXX (Local Number Prefix) : 934 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 : QUASQUETON ZIP Code Count : 99 ZIP Code Frequency : 22 ZIP Code : 50682 Other Information NPANXX : 319934 County Population : 0 Switch CLLI (Common Language Location Identifier) : QSTNIAXODS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : EAST BUCHANAN TELEPHONE COOPERATIVE OCN (Operating Company Number) : 1156 Coverage Area Name : QUASQUETON Latitude : 42.3951 Longitude : -91.7521 ‹ previous : 319-931 next › : 319-934 Telephone Number List 319-934-0000 ~ 319-934-9999