Hackensack is a city in and the county seat of Bergen County, New Jersey, United States. The area was officially named New Barbadoes Township until 1921, but has informally been known as Hackensack since at least the 18th century. As of the 2020 U.S. census, the city's population was 46,030. An inner suburb of New York City, Hackensack is located approximately 12 miles (19 km) northwest of Midtown Manhattan and about 7 miles (11 km) from the George Washington Bridge. From a number of locations, including portions of Prospect Avenue, the New York City skyline can be seen.