| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wessington Springs | 1 | 753 | 764 | 0% | 418 | 2 | City |
| Alpena | 2 | 217 | 209 | 0.93% | 133 | 2 | Town |
| Lane | 3 | 52 | 50 | 0% | 112 | 0 | Town |
Wessington Springs is the largest city in Jerauld County, with a population of 753.
Lane is the smallest city in Jerauld County, with a population of 52.
There are 3 cities in Jerauld County, South Dakota.