Area Code 231-867 located in EVART, OSCEOLA, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 867 City : EVART County : OSCEOLA State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 26133 LATA (Local Access Transport Area) : 348 Rate Center : CHIPPEWALK ZIP Code Count : 181 ZIP Code Frequency : 26 ZIP Code : 49631 Other Information NPANXX : 231867 County Population : 0 Switch CLLI (Common Language Location Identifier) : CHLKMIXIDS0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : CENTURYTEL MIDWEST-MIDWEST INC DBA CENTURYLINK OCN (Operating Company Number) : 0671 Coverage Area Name : RODNEY Latitude : 43.7438 Longitude : -85.2986 ‹ previous : 231-867 next › : 231-867 Telephone Number List 231-867-0000 ~ 231-867-9999