City | Rank | County | 2024 Pop. |
|---|---|---|---|
| Pierre | 1 | Hughes County | 13,821 |
| Fort Pierre | 2 | Stanley County | 2,194 |
| Onida | 3 | Sully County | 656 |
| Oahe Acres | 4 | Hughes County | 461 |
| Blunt | 5 | Hughes County | 337 |
| Harrold | 6 | Hughes County | 99 |
| Cow Creek | 7 | Hughes County | 86 |
| Agar | 8 | Sully County | 72 |