Area Code 231-242 located in HARBOR SPRINGS, EMMET, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 242 City : HARBOR SPRINGS County : EMMET State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 2000-10-31 FIPS (Federal Information Processing Standards) : 26047 LATA (Local Access Transport Area) : 348 Rate Center : HARBOR SPG ZIP Code Count : 128 ZIP Code Frequency : 98 ZIP Code : 49740 Other Information NPANXX : 231242 County Population : 0 Switch CLLI (Common Language Location Identifier) : HRSPMIMNRSA Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : AMERITECH MICHIGAN OCN (Operating Company Number) : 9323 Coverage Area Name : HARBOR SPRINGS Latitude : 45.4309 Longitude : -84.9873 ‹ previous : 231-242 next › : 231-243 Telephone Number List 231-242-0000 ~ 231-242-9999