Area Code 301-375 located in INDIAN HEAD, CHARLES, MD, more detail is as below. Place NPA (Numbering Plan Area) : 301 NXX (Local Number Prefix) : 375 City : INDIAN HEAD County : CHARLES State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 24017 LATA (Local Access Transport Area) : 236 Rate Center : INDIANHEAD ZIP Code Count : 157 ZIP Code Frequency : 18 ZIP Code : 20640 Other Information NPANXX : 301375 County Population : 0 Switch CLLI (Common Language Location Identifier) : BRRDMDBRRS0 MSA CBSA (Core Based Statistical Area) : Washington-Arlington-Alexandria, DC-VA-MD-WV MSA CBSA Code (Core Based Statistical Area) : 47900 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : VERIZON MARYLAND, INC. OCN (Operating Company Number) : 9212 Coverage Area Name : BRYANS ROAD Latitude : 38.6287 Longitude : -77.0731 ‹ previous : 301-374 next › : 301-375 Telephone Number List 301-375-0000 ~ 301-375-9999