3 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mission | 1 | 1,126 | 1,153 | -0.35% | 1,918 | 1 | City |
| St. Francis | 2 | 467 | 470 | 0% | 1,290 | 0 | Town |
| Rosebud | 3 | 34 | 36 | 0% | 0.00 | 72 | Township |
Mission is the largest city in Todd County, with a population of 1,126.
Rosebud is the smallest city in Todd County, with a population of 34.
There are 3 cities in Todd County, South Dakota.