
Milbank
- County:
- Grant County
- County Seat:
- No
- Area (mi²):
- 2.774
- State:
- South Dakota
Milbank is a city located in Grant County, South Dakota. Milbank has a 2025 population of 3,500. Milbank is currently declining at a rate of -0.17% annually and its population has decreased by -0.85% since the most recent census, which recorded a population of 3,530 in 2020.
The average household income in Milbank is $84,578 with a poverty rate of 13.63%. The median age in Milbank is 42.3 years: 37.9 years for males, and 47.1 years for females.