| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Alexandria | 1 | 657 | 653 | 0.31% | 1,053 | 1 | City |
| Emery | 2 | 463 | 484 | -0.43% | 1,013 | 0 | City |
| Fulton | 3 | 85 | 84 | 0% | 100 | 1 | Town |
| Farmer | 4 | 16 | 16 | 0% | 193 | 0 | Town |
Alexandria is the largest city in Hanson County, with a population of 657.
Farmer is the smallest city in Hanson County, with a population of 16.
There are 4 cities in Hanson County, South Dakota.