Area Code 978-287 located in ACTON, MIDDLESEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 978 NXX (Local Number Prefix) : 287 City : ACTON County : MIDDLESEX State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1997-10-11 FIPS (Federal Information Processing Standards) : 25017 LATA (Local Access Transport Area) : 128 Rate Center : CONCORD ZIP Code Count : 53 ZIP Code Frequency : 4 ZIP Code : 01720 Other Information NPANXX : 978287 Switch CLLI (Common Language Location Identifier) : CNCRMAWADS0 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 : VERIZON NEW ENGLAND INC. OCN (Operating Company Number) : 9102 Coverage Area Name : CONCORD Latitude : 42.4574 Longitude : -71.3463 ‹ previous : 978-287 next › : 978-287 Telephone Number List 978-287-0000 ~ 978-287-9999