Area Code 517-287 located in JONESVILLE, HILLSDALE, MI, more detail is as below. Place NPA (Numbering Plan Area) : 517 NXX (Local Number Prefix) : 287 City : JONESVILLE County : HILLSDALE State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 26059 LATA (Local Access Transport Area) : 346 Rate Center : NORTHADAMS ZIP Code Count : 100 ZIP Code Frequency : 11 ZIP Code : 49250 Other Information NPANXX : 517287 County Population : 0 Switch CLLI (Common Language Location Identifier) : NADMMIXIDS0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : FRONTIER COMMUNICATIONS OF MICHIGAN, INC. OCN (Operating Company Number) : 4417 Coverage Area Name : NORTH ADAMS Latitude : 41.9724 Longitude : -84.5217 ‹ previous : 517-287 next › : 517-287 Telephone Number List 517-287-0000 ~ 517-287-9999