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.
Data after 2023 is projected based on recent change
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.
White
Black or African American
Other race
Two or more races
Asian
Native American
Native Hawaiian or Pacific Islander
Race | Population | Percentage (of total) |
|---|---|---|
| White | 238,727 | 41.7% |
| Black or African American | 117,441 | 20.51% |
| Other race | 112,995 | 19.74% |
| Two or more races | 69,272 | 12.1% |
| Asian | 32,111 | 5.61% |
| Native American | 1,871 | 0.33% |
| Native Hawaiian or Pacific Islander | 132 | 0.02% |
Married
Widowed
Divorced
Separated
Never Married
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%.
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 |
Average Income
Median Household Income
Poverty Rate