Sewaren (pronounced SEE-waren) is an unincorporated community and census-designated place (CDP) within Woodbridge Township, Middlesex County, New Jersey, United States.

[3] PSE&G's Sewaren Generating Station is a 538-megawatt facility on 152 acres (62 ha) along the Arthur Kill.

[citation needed] Sewaren is in northeastern Middlesex County, in southeastern Woodbridge Township.

It is bordered to the south by the city of Perth Amboy, to the west by Woodbridge proper, to the north by Port Reading, also within Woodbridge Township, and to the east by the Arthur Kill waterway, separating Sewaren from Staten Island, New York.

The borough of Carteret is 2 miles (3 km) to the north, and the Outerbridge Crossing leading to New York is the same distance to the south.

[1] Woodbridge Creek forms the western and southern border of the community and the tidal Arthur Kill forms the eastern border, while Smith Creek flows through the east side of the community.

The 2010 United States census counted 2,756 people, 1,005 households, and 722 families in the CDP.

[15] As of the 2000 United States Census[6] there were 2,780 people, 1,019 households, and 768 families living in the CDP.