Wallington is a borough in Bergen County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 11,335, reflecting a decline of 248 (-2.1%) from the 11,583 counted in the 2000 Census, which had in turn increased by 755 (+7.0%) from the 10,828 counted in the 1990 Census.
Wallington was created as a borough on January 2, 1895 (based on a referendum held on December 31, 1894), at the height of the "Boroughitis" fever then sweeping through Bergen County. The borough was formed from area taken from Bergen Township and Saddle River Township. Sections of Wallington were ceded to Garfield in 1898.