| Place Name | Ballwin |
| Place Type | City |
| ZIP Code(s) | 63011 63021 |
| County | Saint Louis County |
| Area Code(s) | 636 |
| Timezone | Central Daylight Time (CDT) |
| Population (2022) | 30,446 |
| Population Growth Rate (2010-19) | 2.30% |
| Majority Ethnicity | White 88.16% |
| Metro/Micro Stats Area | St. Louis, MO-IL |
| US Congressional District(s) | Missouri 2nd |
| State House Districts | 98,100,101 |
| State Senate Districts | 15,24 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 88.16% |
| African American | 2.33% |
| Hispanic | 0.09% |
| Asian | 6.89% |
| Native American | 0.02% |
| Hawaiin/Pacific Islander | 2.51% |