Area Code 320-338 located in GRANITE FALLS, YELLOW MEDICINE, MN, more detail is as below. Place NPA (Numbering Plan Area) : 320 NXX (Local Number Prefix) : 338 City : GRANITE FALLS County : YELLOW MEDICINE State : MN (Minnesota) NXX Use Type : Landline NXX Intro Version : 2004-12-13 FIPS (Federal Information Processing Standards) : 27173 LATA (Local Access Transport Area) : 626 Rate Center : GRANITEFLS ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 56241 Other Information NPANXX : 320338 County Population : 0 Switch CLLI (Common Language Location Identifier) : STCDMNTO6MD Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : LEVEL 3 COMMUNICATIONS, LLC - MN OCN (Operating Company Number) : 5256 Coverage Area Name : GRANITE FALLS Latitude : 44.8132 Longitude : -95.5398 ‹ previous : 320-337 next › : 320-339 Telephone Number List 320-338-0000 ~ 320-338-9999