
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 82. Brentford is currently declining at a rate of -1.2% annually and its population has decreased by -4.65% since the most recent census, which recorded a population of 86 in 2020.
The average household income in Brentford is $66,819 with a poverty rate of 23.81%. The median age in Brentford is 45.7 years: 45.2 years for males, and 56.2 years for females.