Plum Branch
- County:
- McCormick County
- County Seat:
- No
- Area (mi²):
- 0.739
- State:
- South Carolina
Plum Branch is a town located in McCormick County, South Carolina. Plum Branch has a 2026 population of 82. Plum Branch is currently declining at a rate of 0% annually and its population has increased by 3.8% since the most recent census, which recorded a population of 79 in 2020.
The median age in Plum Branch is 56.3 years: 52.8 years for males, and 56.8 years for females. For every 100 females there are 156.8 males.