Bridgeton is a city in Cumberland County, New Jersey, United States, in the southern part of the state, on the Cohansey River, near Delaware Bay. As of the 2010 United States Census, the city's population was 25,349, reflecting an increase of 2,578 from the 22,771 counted in the 2000 Census, which had in turn increased by 3,829 from the 18,942 counted in the 1990 Census. 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, which encompasses those cities and all of Cumberland County for statistical purposes and which constitutes a part of the Delaware Valley.