Franklin Lakes is a borough in Bergen County, New Jersey, United States. As of the 2010 census, the borough's population was 10,590, reflecting an increase of 168 (+1.6%) from the 10,422 counted in the 2000 Census, which had in turn increased by 549 (+5.6%) from the 9,873 counted in the 1990 Census. Becton Dickinson, a Fortune 500 company, is headquartered in Franklin Lakes.
Franklin Lakes was formed by an act of the New Jersey Legislature on March 11, 1922, from portions of Franklin Township, based on the results of a referendum held on April 11, 1922. The borough was named for William Franklin, the illegitimate son of Benjamin Franklin, a steadfast Loyalist who served as the last colonial Governor of New Jersey.
The borough is one of the state's highest-income communities. Based on data from the American Community Survey for 2014–2018, Franklin Lakes residents had a median household income of $159,883, more than double the statewide median. In 2010, Forbes ranked Franklin Lakes at 146th in its listing of "America's Most Expensive ZIP Codes," with a median home price of $1,306,546.
According to the United States Census Bureau, the borough had a total area of 9.88 square miles (25.60 km2), including 9.41 square miles (24.38 km2) of land and 0.47 square miles (1.21 km2) of water (4.75%).
Unincorporated communities, localities and place names located partially or wholly within the borough include Bakers Pond, Blauvelt Lakes, Campgaw, Crystal Lakes, Ferdinands Mills, Hopper Lake, Pulis Mills and Shadow Lake.
The borough borders the municipalities of Mahwah, Oakland and Wyckoff in Bergen County; and both North Haledon and Wayne in Passaic County.
The 2010 United States Census counted 10,590 people, 3,527 households, and 3,012 families in the borough. The population density was 1,129.1 inhabitants per square mile (435.9/km2). There were 3,692 housing units at an average density of 393.6 per square mile (152.0/km2). The racial makeup was 88.92% (9,417) White, 1.41% (149) Black or African American, 0.04% (4) Native American, 7.34% (777) Asian, 0.00% (0) Pacific Islander, 0.83% (88) from other races, and 1.46% (155) from two or more races.