Area Code 978-233 located in SALEM, ESSEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 978 NXX (Local Number Prefix) : 233 City : SALEM County : ESSEX State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 25009 LATA (Local Access Transport Area) : 128 Rate Center : HAMILTON ZIP Code Count : 1 ZIP Code Frequency : 8 ZIP Code : 01970 Other Information NPANXX : 978233 Switch CLLI (Common Language Location Identifier) : CMBSMAAZDS0 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 : BROADWING COMMUNICATIONS, LLC - MA OCN (Operating Company Number) : 8924 Coverage Area Name : HAMILTON Latitude : 42.6089 Longitude : -70.8717 ‹ previous : 978-232 next › : 978-233 Telephone Number List 978-233-0000 ~ 978-233-9999