Area Code 978-384 located in MERRIMAC, ESSEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 978 NXX (Local Number Prefix) : 384 City : MERRIMAC County : ESSEX State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1998-11-20 FIPS (Federal Information Processing Standards) : 25009 LATA (Local Access Transport Area) : 128 Rate Center : MERRIMAC ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 01860 Other Information NPANXX : 978384 Switch CLLI (Common Language Location Identifier) : MRBOMAFZDS0 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 : TELEPORT COMMUNICATIONS GROUP - BOSTON OCN (Operating Company Number) : 7135 Coverage Area Name : MERRIMAC Latitude : 42.8314 Longitude : -70.9988 ‹ previous : 978-383 next › : 978-385 Telephone Number List 978-384-0000 ~ 978-384-9999