Area Code 978-221 located in LAWRENCE, ESSEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 978 NXX (Local Number Prefix) : 221 City : LAWRENCE County : ESSEX State : MA (Massachusetts) NXX Use Type : Wireless NXX Intro Version : 1998-11-20 FIPS (Federal Information Processing Standards) : 25009 LATA (Local Access Transport Area) : 128 Rate Center : LAWRENCE ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 01841 Other Information NPANXX : 978221 Switch CLLI (Common Language Location Identifier) : BSTNMACVWDC 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 : MCI WORLDCOM COMMUNICATIONS, INC. - MA OCN (Operating Company Number) : 7199 Coverage Area Name : LOWELL Latitude : 42.6406 Longitude : -71.3089 ‹ previous : 978-221 next › : 978-222 Telephone Number List 978-221-0000 ~ 978-221-9999