Warren County, NJ Demographics
Warren County, NJ is the 19th most populous of 21 counties in New Jersey, with 109,632 residents across 357 square miles. That is about 307 people per square mile.
At the 2020 census
| Population | 109,632 |
|---|---|
| Land area | 357 sq mi |
| Density | 307 / sq mi |
Data: 2020 Census · American Community Survey 2024
How Warren County compares to the US
We're computing this county's comparison table — check back shortly. Population, land area, and density above are already exact.
Central Location: Warren County, NJ
Measured from the county's main population center using 2020 census blocks.
We're computing the drive-time and radius areas around Warren County, NJ — check back shortly. Meanwhile you can drop a pin anywhere in the radius tool.
Census tracts in Warren County, NJ
| Name | Population | Sq mi | Per sq mi |
|---|---|---|---|
| Census Tract 322 | 8,776 | 7.3 | 1,200 |
| Census Tract 315 | 7,781 | 29.6 | 263 |
| Census Tract 312 | 7,399 | 54.5 | 136 |
| Census Tract 320 | 7,299 | 2.0 | 3,714 |
| Census Tract 319 | 6,492 | 18.0 | 361 |
| Census Tract 311.01 | 5,715 | 50.6 | 113 |
| Census Tract 321.02 | 5,473 | 10.6 | 517 |
| Census Tract 313.01 | 5,469 | 19.8 | 276 |
| Census Tract 313.02 | 5,335 | 20.0 | 267 |
| Census Tract 314.02 | 5,326 | 1.7 | 3,190 |
| Census Tract 307 | 5,059 | 0.5 | 11,223 |
| Census Tract 314.01 | 4,922 | 1.9 | 2,534 |
| Census Tract 316.01 | 4,606 | 27.4 | 168 |
| Census Tract 306 | 4,111 | 1.0 | 4,279 |
| Census Tract 311.02 | 3,786 | 40.4 | 94 |
| Census Tract 323 | 3,241 | 13.4 | 242 |
| Census Tract 308 | 3,067 | 1.1 | 2,847 |
| Census Tract 309 | 3,012 | 0.7 | 4,286 |
| Census Tract 321.01 | 2,968 | 23.4 | 127 |
| Census Tract 317 | 2,520 | 1.4 | 1,739 |
| Census Tract 318 | 2,503 | 23.8 | 105 |
| Census Tract 316.02 | 2,444 | 6.0 | 410 |
| Census Tract 324 | 2,328 | 1.7 | 1,385 |
Related places
Other counties nearby
Nearest counties
Metro areas containing Warren County
About this page
This page shows demographics for a US county from the 2020 census and the American Community Survey: population, land area, density, urban share, and how the county compares to national averages for income, housing, age, and more.
Counties subdivide into census tracts, listed below with their populations. The drive-time and radius tables measure the population around the county's main population center.