| Place Name | Buffalo |
| Place Type | Census Designated Place |
| ZIP Code(s) | 29321 |
| County | Union County |
| Area Code(s) | 864 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 1,300 |
| Population Growth Rate (2010-19) | 1.74% |
| Majority Ethnicity | White 89.02% |
| Metro/Micro Stats Area | Union, SC |
| US Congressional District(s) | South Carolina 5th |
| State House Districts | 42 |
| State Senate Districts | 13 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 89.02% |
| African American | 10.98% |
| Hispanic | 0% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 0% |