Union County's estimated 2026 population is 618,320 with a growth rate of 1.99% 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 15.07% 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 (41.7%)
Black or African American (20.51%)
Other race (19.74%)
Two or more races (12.1%)
Asian (5.61%)
Native American (0.33%)
Native Hawaiian or Pacific Islander (0.02%)
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