| Place Name | Leaf River Township |
| Place Type | Township |
| ZIP Code(s) | 61039 61047 |
| County | Ogle County |
| Area Code(s) | 815,779 |
| Timezone | Central Daylight Time (CDT) |
| Population (2021) | 1,211 |
| Majority Ethnicity | White 96.5% |
| Metro/Micro Stats Area | Rochelle, IL |
| US Congressional District(s) | Illinois 16th |
| State House Districts | 89 |
| State Senate Districts | 45 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 96.5% |
| African American | 0.57% |
| Hispanic | 0.08% |
| Asian | 0.24% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 2.61% |