
Green Valley
- County:
- Pennington County
- County Seat:
- No
- Area (mi²):
- 3.837
- State:
- South Dakota
Green Valley is a CDP located in Pennington County, South Dakota. Green Valley has a 2025 population of 1,459. Green Valley is currently growing at a rate of 2.46% annually and its population has increased by 16.53% since the most recent census, which recorded a population of 1,252 in 2020.
The average household income in Green Valley is $78,414 with a poverty rate of 20.14%. The median age in Green Valley is 34.1 years: 34.5 years for males, and 34.1 years for females.