| Place Name | St. Clair Township |
| Place Type | Township |
| ZIP Code(s) | 62208 62220 62221 62223 62226 |
| County | Saint Clair County |
| Area Code(s) | 618 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 35,790 |
| Majority Ethnicity | White 69.3% |
| Metro/Micro Stats Area | St. Louis, MO-IL |
| US Congressional District(s) | Illinois 12th |
| State House Districts | 113,114 |
| State Senate Districts | 57 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 69.3% |
| African American | 24.02% |
| Hispanic | 0.1% |
| Asian | 2.49% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 4.09% |