Plankinton
- Population
- 725 (2020)
- Type
- City
- Area
- 0.76 sq mi (1.98 km²)
- Median age
- 36.9
- Households
- 470
- Persons per household
- 2.5
- Median household income
- $65,060
- Average house value
- $97,500
- Businesses
- 43
- Employees
- 441
- Government
- CITY OF PLANKINTON
- Government office
- PO BOX 517, PLANKINTON, SD 57368