Brentford
- County:
- Spink County
- County Seat:
- No
- Area (mi²):
- 0.163
- State:
- South Dakota
Brentford is a town located in Spink County, South Dakota. Brentford has a 2025 population of 86 . Brentford is currently growing at a rate of 1.18% annually but its population has decreased by -1.15% since the most recent census, which recorded a population of 87 in 2020.
The median age in Brentford is 45.7 years: 45.2 years for males, and 56.2 years for females. For every 100 females there are 86.7 males.