Montvale is a borough in northern Bergen County, in the U.S. state of New Jersey, bordering the state of New York. The borough is part of the New York City metropolitan area. As of the 2020 United States census, the borough's population was 8,436, an increase of 592 (+7.5%) from the 2010 census count of 7,844, which in turn reflected an increase of 810 (+11.5%) from the 7,034 counted in the 2000 census.