| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Parker | 1 | 1,381 | 1,200 | 2.37% | 1,178 | 1 | City |
| Centerville | 2 | 995 | 923 | 1.12% | 1,382 | 1 | City |
| Marion | 3 | 906 | 849 | 1.23% | 1,044 | 1 | City |
| Viborg | 4 | 862 | 812 | 1.06% | 1,661 | 1 | City |
| Hurley | 5 | 394 | 377 | 0.77% | 640 | 1 | City |
| Chancellor | 6 | 327 | 301 | 1.55% | 1,486 | 0 | Town |
| Monroe | 7 | 165 | 157 | 0.61% | 435 | 0 | Town |
| Davis | 8 | 57 | 55 | 0% | 133 | 0 | Town |
Parker is the largest city in Turner County, with a population of 1,381.
Davis is the smallest city in Turner County, with a population of 57.
There are 8 cities in Turner County, South Dakota.