| Place Name | Old Westbury |
| Place Type | Village |
| ZIP Code(s) | 11568 |
| County | Nassau County |
| Area Code(s) | 516 |
| Timezone | Eastern Standard Time (EST) |
| Population (2022) | 4,921 |
| Population Growth Rate (2010-19) | -8.18% |
| Majority Ethnicity | White 70.08% |
| Metro/Micro Stats Area | New York-Newark-Jersey City, NY-NJ-PA |
| US Congressional District(s) | New York 3rd |
| State Assembly Districts | 15,16,19 |
| State Senate Districts | 5,7 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 70.08% |
| African American | 9.34% |
| Hispanic | 0% |
| Asian | 13.2% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 7.38% |