Area Code 231-515 located in EVART, OSCEOLA, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 515 City : EVART County : OSCEOLA State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 2005-03-27 FIPS (Federal Information Processing Standards) : 26133 LATA (Local Access Transport Area) : 348 Rate Center : EVART ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 49631 Other Information NPANXX : 231515 County Population : 0 Switch CLLI (Common Language Location Identifier) : GDRPMIBLXTZ Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : ACD TELECOM, INC. - MI OCN (Operating Company Number) : 3535 Coverage Area Name : EVART Latitude : 43.9015 Longitude : -85.2687 ‹ previous : 231-514 next › : 231-516 Telephone Number List 231-515-0000 ~ 231-515-9999