where is clifton, nj
Clifton, NJ. Sponsored Topics. Clifton is a city in Passaic County, New Jersey, United States. As of the 2010 United States Census, the city had a total population of 84,136. The 2010 population represented an increase of 5,464 residents from its population of 78,672 in the 2000 Census, making it the state's 11th largest municipality.