551 Area Code: Jersey City, New Jersey

New Jersey's 551 area code is an overlay sharing geography with the long-running 201 across the state's northeastern corner. Jersey City anchors the directory's records here. The city sits across the Hudson River from Lower Manhattan, with a downtown that has reshaped itself substantially over the past three decades alongside the surrounding waterfront development. The 551 designation, part of the North American Numbering Plan, has been filling with allocations as the broader 201 region's number demand has continued to grow.

Records linked to 551 numbers in the directory often include Cherry Hill, Edison, Elizabeth, and Newark — New Jersey cities outside the 551 footprint. The pattern reflects standard public-record dynamics, with phone numbers porting across New Jersey and addresses linked across multiple cities. The directory currently documents 115 distinct prefixes within 551 in detail, a working subset of the prefix population the code carries.

Jersey City's home values come in well above the US median, in line with broader Hudson waterfront pricing pressure. Median household income runs notably above the national reading, the city's median age sits a few years under the US figure, and population places Jersey City among the larger cities in New Jersey. The 551 footprint shares those demographics with 201 because both codes serve the same northeastern New Jersey geography in overlapping form, and the broader region's economic and demographic profile reflects the corridor's deep integration with the New York metro.