High Quality Content by WIKIPEDIA articles! Bridgeton is a city in Cumberland County, New Jersey, United States, in the south part of the state, on the Cohansey River, near Delaware Bay. As of the 2010 United States Census, the city population was 25,349. It is the county seat of Cumberland County. Bridgeton, Millville and Vineland are the three principal cities of the Vineland-Millville-Bridgeton Primary Metropolitan Statistical Area. It encompasses those cities and all of Cumberland County for statistical purposes.