| Place Name | Hamilton Square |
| Place Type | Census Designated Place |
| ZIP Code(s) | 08690 08691 |
| County | Mercer County |
| Area Code(s) | 609,640 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 13,477 |
| Population Growth Rate (2010-19) | -0.82% |
| Majority Ethnicity | White 89.18% |
| Metro/Micro Stats Area | Trenton-Princeton, NJ |
| US Congressional District(s) | New Jersey 4th |
| State Assembly Districts | 14 |
| State Senate Districts | 14 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 89.18% |
| African American | 2.3% |
| Hispanic | 0% |
| Asian | 5.01% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.5% |