Area Code 517-200 located in LITCHFIELD, HILLSDALE, MI, more detail is as below. Place NPA (Numbering Plan Area) : 517 NXX (Local Number Prefix) : 200 City : LITCHFIELD County : HILLSDALE State : MI (Michigan) NXX Use Type : Wireless NXX Intro Version : 2004-08-17 FIPS (Federal Information Processing Standards) : 26059 LATA (Local Access Transport Area) : 346 Rate Center : LITCHFIELD ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 49252 Other Information NPANXX : 517200 County Population : 0 Switch CLLI (Common Language Location Identifier) : LNNGMIMNXTY Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : NEW CINGULAR WIRELESS PCS, LLC - IL OCN (Operating Company Number) : 6534 Coverage Area Name : LITCHFIELD Latitude : 42.0426 Longitude : -84.7587 ‹ previous : 516-998 next › : 517-202 Telephone Number List 517-200-0000 ~ 517-200-9999