| Place Name | Blackwells Mills |
| Place Type | Census Designated Place |
| ZIP Code(s) | 08844 08873 |
| County | Somerset County |
| Area Code(s) | 908,732,848 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 525 |
| Population Growth Rate (2010-19) | 1079.70% |
| Majority Ethnicity | White 66.28% |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New Jersey 7thNew Jersey 12th |
| State Assembly Districts | 16,17 |
| State Senate Districts | 16,17 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 66.28% |
| African American | 2.82% |
| Hispanic | 1.08% |
| Asian | 22.92% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 6.9% |