47 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Winner | 1 | 2,916 | 2,906 | 0.07% | 1,272 | 2.29 | City |
| Lamro township | 2 | 453 | 447 | 0.67% | 13 | 33.58 | Township |
| Colome | 3 | 330 | 330 | 0% | 1,170 | 0.28 | City |
| Black township | 4 | 133 | 137 | -0.75% | 4 | 35.71 | Township |
| Pleasant View township | 5 | 124 | 115 | 2.48% | 3 | 35.84 | Township |
| Ideal township | 6 | 121 | 121 | 0% | 3 | 35.88 | Township |
| Wilson township | 7 | 102 | 102 | 0% | 3 | 35.81 | Township |
| Colome township | 8 | 97 | 97 | 0% | 3 | 35.46 | Township |
| Stewart township | 9 | 82 | 80 | 0% | 2 | 36.02 | Township |
| Ideal | 10 | 64 | 75 | 6.67% | 125 | 0.51 | CDP |
| Brunson township | 11 | 58 | 56 | 1.75% | 2 | 28.81 | Township |
| Valley township | 12 | 56 | 57 | 0% | 2 | 34.80 | Township |
| McNeely township | 13 | 55 | 53 | 1.85% | 2 | 35.87 | Township |
| New Witten | 14 | 54 | 54 | 0% | 195 | 0.28 | Town |
| Lake township | 15 | 54 | 52 | 1.89% | 2 | 35.98 | Township |
| Willow Creek township | 16 | 54 | 52 | 1.89% | 2 | 35.71 | Township |
| Star Prairie township | 17 | 50 | 48 | 2.04% | 1 | 35.91 | Township |
| Rosedale township | 18 | 47 | 45 | 2.17% | 1 | 35.78 | Township |
| Jordan township | 19 | 46 | 44 | 2.22% | 1 | 35.66 | Township |
| King township | 20 | 45 | 43 | 2.27% | 1 | 35.87 | Township |
| Plainview township | 21 | 45 | 43 | 2.27% | 1 | 35.68 | Township |
| Roseland township | 22 | 42 | 40 | 0% | 1 | 35.82 | Township |
| Condon township | 23 | 41 | 39 | 2.5% | 1 | 35.85 | Township |
| Curlew township | 24 | 40 | 38 | 2.56% | 1 | 39.25 | Township |
| Lincoln township | 25 | 40 | 38 | 2.56% | 1 | 35.83 | Township |
| Weaver township | 26 | 39 | 37 | 2.63% | 1 | 35.73 | Township |
| Carter township | 27 | 35 | 35 | 0% | 1 | 26.27 | Township |
| Rames township | 28 | 32 | 32 | 0% | 1 | 34.87 | Township |
| Witten township | 29 | 32 | 32 | 0% | 1 | 28.27 | Township |
| Pleasant Valley township | 30 | 30 | 30 | 0% | 1 | 28.89 | Township |
| Dog Ear township | 31 | 28 | 28 | 0% | 1 | 35.66 | Township |
| Elliston township | 32 | 28 | 28 | 0% | 1 | 35.73 | Township |
| Sully township | 33 | 27 | 27 | 0% | 1 | 35.64 | Township |
| Bull Creek township | 34 | 25 | 25 | 0% | 1 | 29.02 | Township |
| Millboro township | 35 | 25 | 25 | 0% | 1 | 34.91 | Township |
| Star Valley township | 36 | 24 | 24 | 0% | 1 | 41.98 | Township |
| Wortman township | 37 | 23 | 23 | 0% | 1 | 35.82 | Township |
| Taylor township | 38 | 22 | 22 | 0% | 1 | 26.25 | Township |
| Banner township | 39 | 21 | 21 | 0% | 1 | 28.77 | Township |
| Irwin township | 40 | 20 | 20 | 0% | 1 | 35.70 | Township |
| Lone Star township | 41 | 20 | 20 | 0% | 1 | 35.64 | Township |
| Holsclaw township | 42 | 19 | 19 | 0% | 1 | 23.82 | Township |
| Beaver Creek township | 43 | 18 | 18 | 0% | 1 | 21 | Township |
| Keyapaha township | 44 | 16 | 16 | 0% | 0.00 | 34.85 | Township |
| Huggins township | 45 | 15 | 15 | 0% | 0.00 | 34.88 | Township |
| Lone Tree township | 46 | 11 | 11 | 0% | 0.00 | 35.74 | Township |
| Greenwood township | 47 | 8 | 8 | 0% | 0.00 | 44.63 | Township |
Winner is the largest city in Tripp County, with a population of 2,916.
Greenwood township is the smallest city in Tripp County.
There are 47 cities in Tripp County, South Dakota.