| Place Name | South Otter Township |
| Place Type | Township |
| ZIP Code(s) | 62626 62640 62674 |
| County | Macoupin County |
| Area Code(s) | 217 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 240 |
| Majority Ethnicity | White 100% |
| Metro/Micro Stats Area | St. Louis, MO-IL |
| US Congressional District(s) | Illinois 13th |
| State House Districts | 100 |
| State Senate Districts | 50 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 100% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |