Plainview
- County:
- Tripp County
- County Seat:
- No
- Area (mi²):
- 35.677
- State:
- South Dakota
Plainview is located in Tripp County, South Dakota. Plainview has a 2025 population of 45. Plainview is currently growing at a rate of 2.27% annually and its population has increased by 4.65% since the most recent census, which recorded a population of 43 in 2020.
The median age in Plainview is 65.5 years: 0 years for males, and 0 years for females.