where is allendale new jersey
Allendale is a borough in Bergen County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 6,505, reflecting a decline of 194 (-2.9%) from the 6,699 counted in the 2000 Census, which had in turn increased by 799 (+13.5%) from the 5,900 counted in the 1990 Census.