| Place Name | Hadley Township |
| Place Type | Township |
| County | Saint Louis County |
| Area Code(s) | 314 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 35,079 |
| Majority Ethnicity | White 76.68% |
| Metro/Micro Stats Area | St. Louis, MO-IL |
| US Congressional District(s) | Missouri 1st |
| State House Districts | 83,87 |
| State Senate Districts | 1,4,14 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 76.68% |
| African American | 9.72% |
| Hispanic | 0.07% |
| Asian | 9.76% |
| Native American | 0.03% |
| Hawaiin/Pacific Islander | 3.74% |