Area Code 978-733 located in STERLING, WORCESTER, MA, more detail is as below. Place NPA (Numbering Plan Area) : 978 NXX (Local Number Prefix) : 733 City : STERLING County : WORCESTER State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 25027 LATA (Local Access Transport Area) : 128 Rate Center : CLINTON ZIP Code Count : 4 ZIP Code Frequency : 2 ZIP Code : 01564 Other Information NPANXX : 978733 Switch CLLI (Common Language Location Identifier) : NDHMMAEFDS0 MSA CBSA (Core Based Statistical Area) : Worcester, MA MSA CBSA Code (Core Based Statistical Area) : 49340 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : COMCAST PHONE OF MASSACHUSETTS, INC. - MA OCN (Operating Company Number) : 6101 Coverage Area Name : CLINTON Latitude : 42.4149 Longitude : -71.6793 ‹ previous : 978-733 next › : 978-733 Telephone Number List 978-733-0000 ~ 978-733-9999