
Richland
- County:
- Union County
- County Seat:
- No
- Area (mi²):
- 5.646
- State:
- South Dakota
Richland is a CDP located in Union County, South Dakota. Richland has a 2025 population of 210. Richland is currently growing at a rate of 7.14% annually and its population has increased by 36.36% since the most recent census, which recorded a population of 154 in 2020.
The average household income in Richland is $69,674 with a poverty rate of 19.64%. The median age in Richland is 22.7 years: 19 years for males, and 40.3 years for females.