3 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Winner | 1 | 2,992 | 2,901 | 0.5% | 1,305 | 2 | City |
| Colome | 2 | 341 | 329 | 0.59% | 1,209 | 0 | City |
| New Witten | 3 | 54 | 53 | 0% | 195 | 0 | Town |
Winner is the largest city in Tripp County, with a population of 2,992.
New Witten is the smallest city in Tripp County, with a population of 54.
There are 3 cities in Tripp County, South Dakota.