| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Highmore | 1 | 627 | 669 | -1.1% | 333 | 2 | City |
Highmore is the largest city in Hyde County, with a population of 627.
Highmore is the smallest city in Hyde County, with a population of 627.
There is 1 city in Hyde County, South Dakota.