3 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wessington Springs | 1 | 777 | 764 | 0.26% | 431 | 2 | City |
| Alpena | 2 | 222 | 207 | 1.37% | 136 | 2 | Town |
| Lane | 3 | 47 | 47 | 0% | 101 | 0 | Town |
Wessington Springs is the largest city in Jerauld County, with a population of 777.
Lane is the smallest city in Jerauld County, with a population of 47.
There are 3 cities in Jerauld County, South Dakota.