Garden Prairie
- County:
- Brown County
- County Seat:
- No
- Area (mi²):
- 36.017
- State:
- South Dakota
Garden Prairie is located in Brown County, South Dakota. Garden Prairie has a 2025 population of 139 . Garden Prairie is currently declining at a rate of -0.71% annually and its population has decreased by -2.11% since the most recent census, which recorded a population of 142 in 2020.
The median age in Garden Prairie is 16.6 years: 0 years for males, and 14.6 years for females. For every 100 females there are 82.2 males.