| Place Name | Buffalo |
| Place Type | Village |
| ZIP Code(s) | 62515 |
| County | Sangamon County |
| Area Code(s) | 217 |
| Timezone | Central Standard Time (CST) |
| Population (2022) | 392 |
| Population Growth Rate (2010-19) | -11.13% |
| Majority Ethnicity | White 94.61% |
| Metro/Micro Stats Area | Springfield, IL |
| US Congressional District(s) | Illinois 18th |
| State House Districts | 87 |
| State Senate Districts | 44 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 94.61% |
| African American | 0% |
| Hispanic | 0% |
| Asian | 1.5% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 3.89% |