| Place Name | Mendon Township |
| Place Type | Township |
| ZIP Code(s) | 62305 62338 62349 62351 62376 |
| County | Adams County |
| Area Code(s) | 217 |
| Timezone | Central Standard Time (CST) |
| Population (2021) | 1,769 |
| Majority Ethnicity | White 92.66% |
| Metro/Micro Stats Area | Quincy, IL-MO |
| US Congressional District(s) | Illinois 18th |
| State House Districts | 94 |
| State Senate Districts | 47 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 92.66% |
| African American | 1.52% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 5.82% |