| Place Name | Lyon Township (Franklin County) |
| Place Type | Township |
| County | Franklin County |
| Area Code(s) | 573,636 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 3,505 |
| Majority Ethnicity | White 97.61% |
| Metro/Micro Stats Area | St. Louis, MO-IL |
| US Congressional District(s) | Missouri 3rd |
| State House Districts | 61 |
| State Senate Districts | 26 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 97.61% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.39% |