| Place Name | Llewellyn Park |
| Place Type | Census Designated Place |
| ZIP Code(s) | 07052 |
| County | Essex County |
| Area Code(s) | 862,973 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 381 |
| Majority Ethnicity | White 71.28% |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New Jersey 10th |
| State Assembly Districts | 27 |
| State Senate Districts | 27 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 71.28% |
| African American | 8.39% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 20.32% |