| Place Name | Weldon Spring Township |
| Place Type | Township |
| ZIP Code(s) | 63304 63366 63368 |
| County | Saint Charles County |
| Area Code(s) | 636 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 25,768 |
| Majority Ethnicity | White 88.56% |
| Metro/Micro Stats Area | St. Louis, MO-IL |
| US Congressional District(s) | Missouri 2ndMissouri 3rd |
| State House Districts | 102,108 |
| State Senate Districts | 2,23 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 88.56% |
| African American | 4.59% |
| Hispanic | 0% |
| Asian | 2.77% |
| Native American | 0.11% |
| Hawaiin/Pacific Islander | 3.98% |