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Population and Demography of New Jersey

New Jersey is a state in the Northeastern region of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware River and Pennsylvania; on the southwest by Delaware Bay and the state of Delaware. 

New Jersey is the eleventh most populous state of the United States and Its fifth-smallest U.S. state by area. The total Land area is 7,354 square miles (19,047 square kilometers) and there is an average of 1263 people for every square mile. This makes New Jersey the most densely populated state in the US. As per the  United States Census Bureau, the population of New Jersey in 2020 is 9,288,994 (9.3 million) 

Estimated population of New Jersey in 2024: 9,290,841 or 9.3 million

New Jersey Population (2010-2020)

New Jersey has a population growth rate of 5.7% during 2010-2020. It has had a population increase of  497,100  since 2010.

New JerseyCensus 2020
Total Population9,288,994 (9.3 million)
Population Rank11th
Total Land Area7,354.22 sq. mi (19,047.34 km2)
Area Rank47th
Population Density1,263/sq mi (488/km2)
Median Age39.5 years

Source: US Census 2020

New Jersey Historical Population

In the year 1910 population of New Jersey was 2.5 million and in the Year 2020 it reached 9.3 million, an increase of almost 6.8 million.

Let’s look at decade population & percentage change from the Year 1910 to 2020

YearPopulation% Change

Source: US Census 2020

Religion and Affiliations

Christianity is the majority religion in New Jersey followed by 67% of the population.  The largest Christian denomination in California is Roman Catholics (34%) followed by Protestants (31%), Mormonism (1%), Eastern Orthodoxy (1%), and Other Christians (1%).

Next comes the Unaffiliated population, 18% of the population doesn’t follow or adhere to any faith or religion. Other non-Christian-based religions and faiths are followed by 14% of the population and include Jewish, Hinduism, Buddhist, Muslim, and other smaller faiths.

For more details read Religion in New Jersey

Race and Ethnicity in New Jersey

In 2020, the White alone (non-Hispanic) population was the largest racial or ethnic group in New Jersey, comprising 51.85% of the total population. It was followed by the Hispanic or Latino population whose share was 21.56%. Black or African American was the third largest group at 12.42%. Asian population also has a good percentage in New Jersey with a share of 10.15%. Two or more races are at 3.12%.

Ancestry in New Jersey

As per Census Studies & estimate Italian, Irish, German, Polish, and English have made the five largest ancestry groups in New Jersey.  It’s estimated that about 6.2% of New Jersey’s population is made up of illegal immigrants, and New Jersey has the 6th highest illegal immigrant population in the US. 

For more Details read Race and Ethnicity in New Jersey

Top cities in New Jersey

As of 2022, New Jersey is divided into 21 counties. The most populated county in New Jersey is Bergen County with 948,406 individuals residing within its boundaries. New Jersey is divided into 21 counties and contains 52 cities, 15 towns, 241 townships, and 3 villages.

The largest city by population in New Jersey is Newark with 311,549 residents followed by Jersey City (292,449). The other cities with more than 100,000 people are Paterson (159,732) and Elizabeth (137,298). 

read more about Counties and Cities in New Jersey

New Jersey Population 2024 | New Jersey Demographics