| Place Name | Syosset |
| Place Type | Census Designated Place |
| ZIP Code(s) | 11791 |
| County | Nassau County |
| Area Code(s) | 516 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 18,691 |
| Population Growth Rate (2010-19) | 2.28% |
| Majority Ethnicity | White 65.64% |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New York 3rd |
| State Assembly Districts | 13,15 |
| State Senate Districts | 5 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 65.64% |
| African American | 1.02% |
| Hispanic | 0.26% |
| Asian | 29.05% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.03% |