Union County Flag

Union County

State:
New Jersey
County Seat:

Union County's estimated 2025 population is 577,344 with a growth rate of 0.4% in the past year according to the most recent United States census data. Union County is the 7th largest county in New Jersey. The 2010 population was 537,336 and has seen a growth of 7.45% since that time.

577,344
Total Population
5,605
Population Density (mi²)
7
Population Rank (State)
2.3K 0.4%
Annual Population Growth

Union County Population

Union County Population

Data after 2023 is projected based on recent change

Demographics

The racial composition of Union County includes 41.7% White, 20.51% Black or African American, 19.74% other race, 5.61% Asian, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

Race
Population
Percentage (of total)
White238,72741.7%
Black or African American117,44120.51%
Other race112,99519.74%
Two or more races69,27212.1%
Asian32,1115.61%
Native American1,8710.33%
Native Hawaiian or Pacific Islander1320.02%

Union County Marital Status

OverallMalesFemales0%10%20%30%40%50%60%70%80%90%100%

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Union County's average per capita income is $57,932. Household income levels show a median of $100,117. The poverty rate stands at 8.92%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median
Mean
Married Families$150,653$199,321
Families$120,310$166,389
Households$100,117$145,621
Non Families$58,079$78,427

$57,932

Average Income

$100,117

Median Household Income

8.92%

Poverty Rate