Area Code 207-257 located in DETROIT, SOMERSET, ME, more detail is as below. Place NPA (Numbering Plan Area) : 207 NXX (Local Number Prefix) : 257 City : DETROIT County : SOMERSET State : ME (Maine) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 23025 LATA (Local Access Transport Area) : 120 Rate Center : PLYMOUTH ZIP Code Count : 181 ZIP Code Frequency : 25 ZIP Code : 04929 Other Information NPANXX : 207257 County Population : 0 Switch CLLI (Common Language Location Identifier) : PLMOMEXARS1 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : MID-MAINE TELECOM, LLC OCN (Operating Company Number) : 3315 Coverage Area Name : DETROIT Latitude : 44.7669 Longitude : -69.2118 ‹ previous : 207-256 next › : 207-257 Telephone Number List 207-257-0000 ~ 207-257-9999