Warren County's 2026 population is estimated at 113,405, reflecting a 0.61% growth rate over the past year (World Population Review estimate based on U.S. Census Bureau data). Warren County is the 19th largest county in New Jersey. The 2010 population was 108,572 and has grown 4.45% since 2010.
Data after 2023 is projected based on recent change
Overall: 44 years
Female: 45.5 years
Male: 42.7 years
There are 89,456 adults, (21,672 of whom are seniors) in Warren County.
Female: 55,584 (50.1%)
Male: 55,265 (49.9%)
The racial composition of Warren County includes 76.87% White, 6.02% Black or African American, 4.21% other race, 3.05% Asian, and smaller percentages for Native American, Native Hawaiian or Pacific Islander and multiracial populations.
| Race | Population ↓ | Percentage (of total) |
|---|---|---|
| White | 85,215 | 76.87% |
| Two or more races | 10,586 | 9.55% |
| Black or African American | 6,677 | 6.02% |
| Other race | 4,667 | 4.21% |
| Asian | 3,381 | 3.05% |
| Native American | 299 | 0.27% |
| Native Hawaiian or Pacific Islander | 24 | 0.02% |
Warren County 's average per capita income is $60,341. Household income levels show a median of $100,869. The poverty rate stands at 8.34%.
| Name | Median ↓ | Mean |
|---|---|---|
| Married Families | $133,613 | - |
| Families | $120,640 | $141,026 |
| Households | $100,869 | $118,920 |
| Non Families | $56,212 | $72,797 |
Average Income
Median Household Income
Poverty Rate