Elko
- County:
- Barnwell County
- County Seat:
- No
- Area (mi²):
- 1.049
- State:
- South Carolina
Elko is a town located in Barnwell County, South Carolina. Elko has a 2026 population of 140. Elko is currently growing at a rate of 1.45% annually and its population has increased by 0.72% since the most recent census, which recorded a population of 139 in 2020.
The median household income in Elko is $40,278 with a poverty rate of 26.69%. The median age in Elko is 32.3 years: 24.9 years for males, and 44.1 years for females. For every 100 females there are 105.6 males.