| Place Name | Hillsdale |
| Place Type | Village |
| ZIP Code(s) | 63121 63133 |
| County | Saint Louis County |
| Area Code(s) | 314 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 1,396 |
| Population Growth Rate (2010-19) | -17.73% |
| Majority Ethnicity | African American 99.23% |
| Metro/Micro Stats Area | St. Louis, MO-IL |
| US Congressional District(s) | Missouri 1st |
| State House Districts | 85 |
| State Senate Districts | 14 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 0.77% |
| African American | 99.23% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |