Closter is a borough in Bergen County, New Jersey, located in the Northern Valley region in the northeastern corner of the state, near the Hudson River Palisades. Its population was 8,594 at the 2020 census. The borough is a predominantly residential, family-oriented suburb, known for its established neighborhoods, tree-lined streets, and strong local schools. The Northern Valley, of which Closter is a part, is one of Bergen County's most desirable suburban areas, characterized by older, well-maintained housing and a stable, long-term residential population. Closter's small commercial areas and civic institutions give it a self-contained, neighborly feel, while its location places it within convenient reach of the broader New York metropolitan region. Public education is provided by the Closter Public Schools for elementary and middle grades, with students advancing to Northern Valley Regional High School at Demarest. That regional district serves Closter together with several neighboring Northern Valley communities, including Demarest, Haworth, Norwood, and Old Tappan, creating a shared educational identity across the area. The borough's recreation and natural amenities include the Closter Nature Center, a local preserve of ponds, brooks, meadows, and forests, and proximity to the Palisades Interstate Park along the Hudson River, offering trails and open space within minutes of home. For commuters, Closter sits roughly 15 miles from Manhattan, reached via Bergen County highways and nearby transit connections. The result is a community that combines suburban comfort, strong schools, and natural beauty with practical access to New York City. Closter's established character and its position within the Northern Valley make it an enduringly sought-after place to live in Bergen County.