Lamar
- County:
- Darlington County
- County Seat:
- No
- Area (mi²):
- 1.213
- State:
- South Carolina
Lamar is a town located in Darlington County, South Carolina. Lamar has a 2026 population of 851. Lamar is currently growing at a rate of 1.07% annually but its population has decreased by -0.47% since the most recent census, which recorded a population of 855 in 2020.