Area Code 973-346 located in SPRINGFIELD, UNION, NJ, more detail is as below. Place NPA (Numbering Plan Area) : 973 NXX (Local Number Prefix) : 346 City : SPRINGFIELD County : UNION State : NJ (New Jersey) NXX Use Type : Landline NXX Intro Version : 1998-08-14 FIPS (Federal Information Processing Standards) : 34039 LATA (Local Access Transport Area) : 224 Rate Center : MILLBURN ZIP Code Count : 1 ZIP Code Frequency : 33 ZIP Code : 07081 Other Information NPANXX : 973346 Switch CLLI (Common Language Location Identifier) : MRTWNJMRNMD MSA CBSA (Core Based Statistical Area) : New York-Northern New Jersey-Long Island, NY-NJ-PA MSA CBSA Code (Core Based Statistical Area) : 35620 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : AT&T LOCAL OCN (Operating Company Number) : 7421 Coverage Area Name : NEWARK Latitude : 40.7357 Longitude : -74.1750 ‹ previous : 973-345 next › : 973-346 Telephone Number List 973-346-0000 ~ 973-346-9999