Updated Jan 02, 2010Area Code 551
"E" is Eastern Time Zone, "C" is Central Time Zone, "M" is Mountain Time Zone, and "P" is Pacific Time Zone. Occasionally, an area code will fall in more than one time zone. In this case, the abbreviation is a combination of the previous abbreviations. Some area codes are shown with time zones referencing Universal Coordinated Time (UTC). Additional technical status can be retrived from the North American Numbering Plan Administration on the 551 area code specific link here.
Area Code 551 ( area code map)
Location New Jersey
Dates and historical information Area code 551 went live into service on December 29, 2001 (The paperwork process started on April 02, 2001).  It was formed as a subdivision of the 201 area code.
Growth Status This area code went live on December 29, 2001 as a result of a subdivision of the 201 area code.
Technical Status 2 Area code 551 is currently live and in service.
Time Zone(s) 1 E
LATA numbers served 224
Number of rate centers served 9
List of rate centers JERSEYCITY, FAIR LAWN, BAYONNE, HACKENSACK, CLIFFSIDE, RAMSEY, UNION CITY, KEARNY, WYCKOFF
Number of major cities served 23
Names of major cities served (ZIP code) Jersey City (07304), Fair Lawn (07410), Fairlawn (07410), Radburn (07410), (00000), Bayonne (07002), Bergen Point (07002), Pamrapo (07002), Hackensack (07601), Hack (07601), Cliffside Park (07010), Cliffside Pk (07010), Cliff Park (07010), Ramsey (07446), Darlington (07446), Weehawken (07087), Union City (07087), Bergenline (07087), Summit Avenue (07087), Kearny (07032), Arlington (07032), South Kearny (07032), West Arlington (07032), Wyckoff (07481)
Number of exchanges served 25
List of exchanges served 551-200-xxxx, 551-206-xxxx, 551-208-xxxx, 551-221-xxxx, 551-226-xxxx, 551-265-xxxx, 551-333-xxxx, 551-358-xxxx, 551-404-xxxx, 551-427-xxxx, 551-482-xxxx, 551-486-xxxx, 551-497-xxxx, 551-556-xxxx, 551-574-xxxx, 551-579-xxxx, 551-580-xxxx, 551-587-xxxx, 551-655-xxxx, 551-689-xxxx, 551-697-xxxx, 551-795-xxxx, 551-804-xxxx, 551-996-xxxx, 551-998-xxxx
Number of telephone companies 8 telephone companies servicing the 551 area code
List of telephone companies CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ, OMNIPOINT COMMUNICATIONS, INC. - NJ, SPRINT SPECTRUM L.P., NEW CINGULAR WIRELESS PCS, LLC - DC, LEVEL 3 COMMUNICATIONS, LLC - NJ, MCI WORLDCOM COMMUNICATIONS, INC., NJ, US LEC OF PENNSYLVANIA INC. - NJ, TELEPORT COMMUNICATIONS GROUP - NEW YORK - NJ
551 Area Code Map