Area Code 231-389 located in HARRIETTA, WEXFORD, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 389 City : HARRIETTA County : WEXFORD State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 26165 LATA (Local Access Transport Area) : 348 Rate Center : HARRIETTA ZIP Code Count : 431 ZIP Code Frequency : 87 ZIP Code : 49638 Other Information NPANXX : 231389 County Population : 0 Switch CLLI (Common Language Location Identifier) : HRTAMIMNRSA MSA CBSA (Core Based Statistical Area) : Cadillac, MI MSA CBSA Code (Core Based Statistical Area) : 15620 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : AMERITECH MICHIGAN OCN (Operating Company Number) : 9323 Coverage Area Name : HARRIETTA Latitude : 44.3114 Longitude : -85.6986 ‹ previous : 231-389 next › : 231-392 Telephone Number List 231-389-0000 ~ 231-389-9999