Old Bridge Township is a township in Middlesex County, New Jersey, United States. The township is located in the Raritan Valley region within the New York metropolitan area. As of the 2010 United States Census, the township had a total population of 65,375, reflecting an increase of 4,919 (+8.1%) from the 60,456 counted in the 2000 Census, which had in turn increased by 3,981 (+7.0%) from the 56,475 counted in the 1990 Census. As of the 2010 Census, the township was the state's 18th largest municipality, after being the state's 21st most-populous municipality in 2000. Old Bridge is a bedroom suburb of New York City located across the Raritan Bay from Staten Island, and it is about 25 miles (40 km) from Manhattan, and about 30 miles (48 km) south of Newark.