Area Code 231-549 located in ELMIRA, OTSEGO, MI, more detail is as below. Place NPA (Numbering Plan Area) : 231 NXX (Local Number Prefix) : 549 City : ELMIRA County : OTSEGO State : MI (Michigan) NXX Use Type : Landline NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 26137 LATA (Local Access Transport Area) : 348 Rate Center : BOYNEFALLS ZIP Code Count : 135 ZIP Code Frequency : 13 ZIP Code : 49730 Other Information NPANXX : 231549 County Population : 0 Switch CLLI (Common Language Location Identifier) : BNFLMIXIDS0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : CENTURYTEL OF MICHIGAN INC DBA CENTURYLINK OCN (Operating Company Number) : 0702 Coverage Area Name : BOYNE FALLS Latitude : 45.1659 Longitude : -84.9129 ‹ previous : 231-548 next › : 231-549 Telephone Number List 231-549-0000 ~ 231-549-9999