Area Code 978-204 located in LAWRENCE, ESSEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 978 NXX (Local Number Prefix) : 204 City : LAWRENCE County : ESSEX State : MA (Massachusetts) NXX Use Type : Wireless NXX Intro Version : 1999-02-27 FIPS (Federal Information Processing Standards) : 25009 LATA (Local Access Transport Area) : 128 Rate Center : LAWRENCE ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 01841 Other Information NPANXX : 978204 Switch CLLI (Common Language Location Identifier) : BOTNMAAZCM0 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 : NEW CINGULAR WIRELESS PCS, LLC - DC OCN (Operating Company Number) : 4036 Coverage Area Name : LAWRENCE Latitude : 42.7065 Longitude : -71.1639 ‹ previous : 978-203 next › : 978-205 Telephone Number List 978-204-0000 ~ 978-204-9999