Area Code 319-278 located in ALLISON, BUTLER, IA, more detail is as below. Place NPA (Numbering Plan Area) : 319 NXX (Local Number Prefix) : 278 City : ALLISON County : BUTLER State : IA (Iowa) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 19023 LATA (Local Access Transport Area) : 635 Rate Center : CLARKSVL ZIP Code Count : 32 ZIP Code Frequency : 3 ZIP Code : 50602 Other Information NPANXX : 319278 County Population : 0 Switch CLLI (Common Language Location Identifier) : CLVLIAAADS0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : BUTLER - BREMER MUTUAL TELEPHONE CO. OCN (Operating Company Number) : 1115 Coverage Area Name : CLARKSVILLE Latitude : 42.7846 Longitude : -92.6666 ‹ previous : 319-278 next › : 319-278 Telephone Number List 319-278-0000 ~ 319-278-9999