Its north–south section lies between Secaucus to the west and to the east Guttenberg, West New York and Union City, with which it meets Jersey City at a single point at its southern end. Since the separation of Secaucus in 1900, North Bergen has a total area of 5.575 square miles (14.438 km2), including 5.134 square miles (13.296 km2) of land and 0.441 square miles (1.142 km2) of water (7.91%). North Bergen has diverse geological features. Partially situated on the Hudson River, the Hudson Palisades rise from the waterfront, while the northern part of the town sits atop the plateau. The cuesta, or slope, on its west side makes North Bergen the city with the second-most hills per square mile in the United States after San Francisco, some of which are extremely steep. A rock formation along the slope (located at ) is composed of unusual serpentinite rock and made up of small rock cliffs. Because of this, it is one of the few undeveloped parts of North Bergen. Low-lying areas along the west side are part of the New Jersey Meadowlands. The unusual shape and diverse topography of North Bergen have created diverse historical and contemporary neighborhoods:   Other historical unincorporated communities, localities and place names located partially or completely within the township include Homestead, Granton, Hudson Heights, New Durham, Shadyside, Three Pigeons and Tyler Park. The town has seven cemeteries, more than any other town in the county, including some, such as Weehawken Cemetery and Hoboken Cemetery, that were at one time designated for other towns. This may be due to the layout of the county in the late 19th and early 20th centuries, with North Bergen having more land than its more densely populated neighbors, which had to bury their dead outside of town. It may also date back to the Civil War era. Among these cemeteries are Flower Hill Cemetery and Grove Church Cemetery. As of the 2000 United States Census there were 58,092 people, 21,236 households, and 14,249 families residing in the township. The population density was 11,179.6 people per square mile (4,313.4/km²). There were 22,009 housing units at an average density of 1, 634.2/km² (4,235.5/sq mi).