| Place Name | Spring Bay Township |
| Place Type | Township |
| ZIP Code(s) | 61548 61611 |
| County | Woodford County |
| Area Code(s) | 309 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 2,545 |
| Majority Ethnicity | White 99.6% |
| Metro/Micro Stats Area | Peoria, IL |
| US Congressional District(s) | Illinois 18th |
| State House Districts | 73 |
| State Senate Districts | 37 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 99.6% |
| African American | 0.04% |
| Hispanic | 0.12% |
| Asian | 0.12% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0.12% |