Area Code 989-203 located in CARSON CITY, MONTCALM, MI, more detail is as below. Place NPA (Numbering Plan Area) : 989 NXX (Local Number Prefix) : 203 City : CARSON CITY County : MONTCALM State : MI (Michigan) NXX Use Type : Wireless NXX Intro Version : 2004-08-17 FIPS (Federal Information Processing Standards) : 26117 LATA (Local Access Transport Area) : 344 Rate Center : VICKERYVL ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 48811 Other Information NPANXX : 989203 Switch CLLI (Common Language Location Identifier) : MNPLMIAI1MD 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 : SHERIDAN Latitude : 43.1903 Longitude : -84.9669 ‹ previous : 989-203 next › : 989-204 Telephone Number List 989-203-0000 ~ 989-203-9999