Area Code 320-537 located in ISLE, MILLE LACS, MN, more detail is as below. Place NPA (Numbering Plan Area) : 320 NXX (Local Number Prefix) : 537 City : ISLE County : MILLE LACS State : MN (Minnesota) NXX Use Type : Landline FIPS (Federal Information Processing Standards) : 27095 LATA (Local Access Transport Area) : 626 Rate Center : ISLE ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 56342 Other Information NPANXX : 320537 County Population : 0 Switch CLLI (Common Language Location Identifier) : STCDMNATGMD Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : ONVOY, INC. OCN (Operating Company Number) : 4899 Coverage Area Name : ISLE Latitude : 46.1305 Longitude : -93.4666 ‹ previous : 320-535 next › : 320-542 Telephone Number List 320-537-0000 ~ 320-537-9999