| Place Name | Hillside |
| Place Type | Unincorporated |
| ZIP Code(s) | 07205 |
| County | Union County |
| Area Code(s) | 862,973 |
| Timezone | Eastern Standard Time (EST) |
| Population () | |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New Jersey 10th |
| State Assembly Districts | 28 |
| State Senate Districts | 28 |