Paterson was originally formed as a township from portions of Acquackanonk Township on April 11, 1831, while the area was still part of Essex County. Paterson became part of the newly-created Passaic County on February 7, 1837. Paterson was incorporated as a city on April 14, 1851, based on the results of a referendum held that day. The city was reincorporated on March 14, 1861.
As of the census of 2000, there were 149,222 people, 44,710 households, and 33,353 families residing in the city. With a population density of 6,826.4/km² (17,675.4/mi²), Paterson is the second most densely populated large city (i.e., with a population of 100,000 or more) in the United States, only after New York City.
There were 47,169 housing units at an average density of 2,157.8/km² (5,587.2/mi²). The racial makeup of the city was 32.90% African American, 13.20% White, 0.60% Native American, 1.90% Asian, 0.06% Pacific Islander, 27.60% from other races, and 6.17% from two or more races. Hispanic or Latino of any race were 50.1% of the population. The majority of Hispanics are Peruvian, Colombian, Dominican and Puerto Rican.
There were 44,710 households out of which 40.9% had children under the age of 18 living with them, 39.4% were married couples living together, 26.8% had a female householder with no husband present, and 25.4% were non-families. 20.4% of all households were made up of individuals and 7.9% had someone living alone who was 65 years of age or older. The average household size was 3.25 and the average family size was 3.71.
In the city the population was spread out with 29.8% under the age of 18, 11.2% from 18 to 24, 32.0% from 25 to 44, 18.7% from 45 to 64, and 8.3% who were 65 years of age or older. The median age was 30 years. For every 100 females there were 94.4 males. For every 100 females age 18 and over, there were 91.1 males.
The median income for a household in the city was $32,778, and the median income for a family was $35,420. Males had a median income of $27,911 versus $22,733 for females. The per capita income for the city was $13,257. About 19.2% of families and 22.2% of the population were below the poverty line, including 29.0% of those under age 18 and 19.1% of those age 65 or over.
The city is served by the New Jersey Transit Main Line commuter rail service. The line stops in the Downtown area at the Paterson station. Plans are being developed for Paterson to receive Light Rail service on the existing NYS&W line, which is currently single-tracked. This light rail line would be called the Bergen-Passaic Light Rail and would have five stops in Paterson. In addition, the Newark Light Rail may come in time to the existing NJ Transit station.
Bus service to locations in Passaic, Bergen, Essex and Hudson counties is provided by NJ Transit, making the city a regional transit hub. The Broadway Bus Terminal, also downtown, is the terminus for NJ Transit bus lines to Newark and the Port Authority Bus Terminal and George Washington Bridge Bus Station in New York City. City Hall has many buses that stop at or near it, going to various points in the area (including New York and the neighboring communities). Service to Manhattan and shopping centers in Bergen County is also provided by independent bus carriers. There is also a dollar bus service that takes you right into the city.