| Place Name | Demarest |
| Place Type | Borough |
| ZIP Code(s) | 07627 |
| County | Bergen County |
| Area Code(s) | 201,551 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 4,909 |
| Population Growth Rate (2010-19) | 2.05% |
| Majority Ethnicity | White 69.9% |
| 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 | 69.9% |
| African American | 0.04% |
| Hispanic | 0% |
| Asian | 27.1% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.96% |