Area Code 351-814 located in ESSEX, ESSEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 351 NXX (Local Number Prefix) : 814 City : ESSEX County : ESSEX State : MA (Massachusetts) Rate Center : LAWRENCE ZIP Code Count : 0 ZIP Code Frequency : 0 Other Information NPANXX : 351814 County Population : 0 Switch CLLI (Common Language Location Identifier) : LWRNMACA03T MSA CBSA (Core Based Statistical Area) : Boston-Cambridge-Quincy, MA-NH MSA CBSA Code (Core Based Statistical Area) : 14460 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : MULTIPLE OCN LISTING OCN (Operating Company Number) : MULT Latitude : None Longitude : None ‹ previous : 351-206 next › : 352-200 Telephone Number List 351-814-0000 ~ 351-814-9999