44 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Redfield | 1 | 2,050 | 2,203 | -1.2% | 1,063 | 2 | City |
| Redfield | 2 | 378 | 387 | -0.26% | 11 | 35 | Township |
| Lincoln | 3 | 325 | 340 | -1.22% | 9 | 35 | Township |
| Capitola | 4 | 258 | 269 | -1.15% | 7 | 36 | Township |
| Tulare | 5 | 200 | 211 | -0.99% | 781 | 0 | Town |
| Doland | 6 | 191 | 202 | -1.04% | 325 | 1 | City |
| Mellette | 7 | 190 | 198 | -0.52% | 742 | 0 | City |
| Northville | 8 | 149 | 156 | -0.67% | 2 | 99 | Township |
| Conde | 9 | 137 | 143 | -0.72% | 243 | 1 | City |
| Northville | 10 | 131 | 139 | -0.76% | 348 | 0 | Town |
| Frankfort | 11 | 128 | 136 | -0.78% | 162 | 1 | City |
| Mellette | 12 | 107 | 116 | -1.83% | 1 | 75 | Township |
| Prairie Center | 13 | 106 | 117 | -1.85% | 3 | 36 | Township |
| Ashton | 14 | 102 | 110 | -0.97% | 233 | 0 | City |
| Lake | 15 | 95 | 101 | -1.04% | 3 | 33 | Township |
| Brentford | 16 | 85 | 87 | 0% | 521 | 0 | Town |
| Belle Plaine | 17 | 81 | 82 | 1.25% | 2 | 36 | Township |
| Crandon | 18 | 81 | 79 | 2.53% | 2 | 36 | Township |
| Belmont | 19 | 67 | 67 | 1.52% | 2 | 36 | Township |
| Three Rivers | 20 | 65 | 65 | 1.56% | 2 | 36 | Township |
| La Prairie | 21 | 60 | 57 | 3.45% | 1 | 50 | Township |
| Exline | 22 | 56 | 62 | -1.75% | 2 | 37 | Township |
| Lodi | 23 | 56 | 56 | 1.82% | 2 | 37 | Township |
| Antelope | 24 | 55 | 54 | 1.85% | 2 | 36 | Township |
| Athol | 25 | 51 | 55 | -1.92% | 1 | 48 | Township |
| Groveland | 26 | 51 | 56 | -1.92% | 1 | 36 | Township |
| Harmony | 27 | 51 | 54 | -1.92% | 1 | 36 | Township |
| Turton | 28 | 51 | 54 | 0% | 139 | 0 | Town |
| Garfield | 29 | 46 | 51 | -2.13% | 1 | 36 | Township |
| Union | 30 | 46 | 47 | 0% | 1 | 36 | Township |
| Tetonka | 31 | 44 | 43 | 2.33% | 1 | 59 | Township |
| Tulare | 32 | 44 | 47 | -2.22% | 1 | 34 | Township |
| Frankfort | 33 | 42 | 45 | -2.33% | 1 | 35 | Township |
| Cornwall | 34 | 38 | 38 | 0% | 1 | 36 | Township |
| Great Bend | 35 | 38 | 40 | 0% | 1 | 36 | Township |
| Olean | 36 | 37 | 42 | -2.63% | 1 | 36 | Township |
| Clifton | 37 | 36 | 38 | 0% | 1 | 48 | Township |
| Beotia | 38 | 27 | 31 | -3.57% | 1 | 36 | Township |
| Turton | 39 | 23 | 27 | -4.17% | 1 | 36 | Township |
| Benton | 40 | 22 | 23 | 0% | 1 | 36 | Township |
| Conde | 41 | 22 | 26 | -4.35% | 1 | 35 | Township |
| Richfield | 42 | 22 | 23 | 0% | 1 | 36 | Township |
| Spring | 43 | 21 | 22 | 0% | 1 | 36 | Township |
| Sumner | 44 | 13 | 14 | 0% | 0.00 | 36 | Township |
Redfield is the largest city in Spink County, with a population of 2,050.
Sumner is the smallest city in Spink County, with a population of 13.
There are 44 cities in Spink County, South Dakota.