| Place Name | Rock Hill |
| Place Type | City |
| ZIP Code(s) | 63119 63124 63144 |
| County | Saint Louis County |
| Area Code(s) | 314 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 4,628 |
| Population Growth Rate (2010-19) | 2.48% |
| Majority Ethnicity | White 66.31% |
| Metro/Micro Stats Area | St. Louis, MO-IL |
| US Congressional District(s) | Missouri 2nd |
| State House Districts | 83 |
| State Senate Districts | 1 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 66.31% |
| African American | 28.55% |
| Hispanic | 0% |
| Asian | 1.42% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.72% |