| Place Name | Hillsdale |
| Place Type | Borough |
| ZIP Code(s) | 07642 |
| County | Bergen County |
| Area Code(s) | 201,551 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 10,251 |
| Population Growth Rate (2010-19) | -0.74% |
| Majority Ethnicity | White 82.42% |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New Jersey 5th |
| State Assembly Districts | 39 |
| State Senate Districts | 39 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 82.42% |
| African American | 2.3% |
| Hispanic | 0.17% |
| Asian | 6.85% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 8.25% |