Paterson ( PAT-ər-sən) is the largest city in and the county seat of Passaic County, in the U.S. state of New Jersey. As of the 2020 United States census, the city was the state's third-most-populous municipality, with a population of 159,732. A prominent mill town within the New York area, Paterson has been known as the Silk City for its once-dominant role in silk production during the latter half of the 19th century. It has since evolved into a major destination for Hispanic immigrants as well as for immigrants from Turkey, the Arab world, and South Asia. Paterson has the nation's second-largest per capita Muslim population.