| Place Name | Monarch Mill |
| Place Type | Census Designated Place |
| ZIP Code(s) | 29379 |
| County | Union County |
| Area Code(s) | 864 |
| Timezone | Eastern Daylight Time (EDT) |
| Population (2022) | 2,238 |
| Population Growth Rate (2010-19) | -12.53% |
| Majority Ethnicity | White 68.65% |
| Metro/Micro Stats Area | Union, SC |
| US Congressional District(s) | South Carolina 5th |
| State House Districts | 42 |
| State Senate Districts | 14,18 |
| Race/Ethnicy | Percentage of Population (2021) |
|---|---|
| White | 68.65% |
| African American | 29.74% |
| Hispanic | 0.51% |
| Asian | 0% |
| Native American | 0% |
| Hawaiin/Pacific Islander | 1.1% |