Area Code 320-379 located in GRANITE FALLS, YELLOW MEDICINE, MN, more detail is as below. Place NPA (Numbering Plan Area) : 320 NXX (Local Number Prefix) : 379 City : GRANITE FALLS County : YELLOW MEDICINE State : MN (Minnesota) NXX Use Type : Landline NXX Intro Version : 3/17/2010 FIPS (Federal Information Processing Standards) : 27173 LATA (Local Access Transport Area) : 626 Rate Center : GRANITEFLS ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 56241 Other Information NPANXX : 320379 County Population : 0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : MCC TELEPHONY OF MINNESOTA, LLC - MN OCN (Operating Company Number) : 719F Coverage Area Name : GRANITE FALLS Latitude : 44.8132 Longitude : -95.5398 ‹ previous : 320-377 next › : 320-380 Telephone Number List 320-379-0000 ~ 320-379-9999