Area code 551 is an overlay of the 201 area code in northeastern New Jersey, covering Hudson and Bergen counties, including cities like Jersey City, Hoboken, and Fort Lee. Introduced in 2001, it supports one of the most densely populated and economically vital regions of the New York metropolitan area. The area is a commuter haven, with extensive transit connections into Manhattan via PATH trains, ferries, and highways. Major employers include financial firms, healthcare networks like Hackensack Meridian Health, and tech startups growing in Jersey City's redevelopment zones. The region also supports a large immigrant and multicultural population, fueling small business growth and international commerce. A 551 number offers the benefits of a highly recognizable location with modern availability, making it ideal for startups, healthcare practices, and professional services looking to serve New York–adjacent communities with a local presence.