40 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Lemmon | 1 | 1,152 | 1,161 | -0.17% | 1,049 | 1.10 | City |
| Bison | 2 | 303 | 305 | 0% | 305 | 0.99 | Town |
| Lincoln township | 3 | 136 | 138 | 0% | 2 | 81.16 | Township |
| De Witt township | 4 | 46 | 44 | 2.22% | 1 | 56.34 | Township |
| Meadow township | 5 | 41 | 39 | 2.5% | 1 | 35.58 | Township |
| Chance township | 6 | 40 | 38 | 2.56% | 1 | 71.27 | Township |
| Horse Creek township | 7 | 40 | 38 | 2.56% | 1 | 51.98 | Township |
| Marshfield township | 8 | 40 | 38 | 2.56% | 1 | 71.55 | Township |
| Fredlund township | 9 | 36 | 34 | 2.86% | 1 | 35.32 | Township |
| Lone Tree township | 10 | 30 | 28 | 3.45% | 1 | 35.64 | Township |
| Lodgepole township | 11 | 28 | 28 | 0% | 1 | 36.01 | Township |
| Prairie City | 12 | 27 | 55 | 3.85% | 19 | 1.42 | CDP |
| Wilson township | 13 | 26 | 26 | 0% | 1 | 36.04 | Township |
| Antelope township | 14 | 23 | 23 | 0% | 1 | 35.63 | Township |
| Burdick township | 15 | 23 | 23 | 0% | 1 | 36.05 | Township |
| Rainbow township | 16 | 23 | 23 | 0% | 1 | 35.42 | Township |
| Wells township | 17 | 22 | 22 | 0% | 1 | 34.87 | Township |
| Foster township | 18 | 21 | 21 | 0% | 0.00 | 64.32 | Township |
| Grand River township | 19 | 21 | 21 | 0% | 0.00 | 51.73 | Township |
| Rockford township | 20 | 20 | 20 | 0% | 1 | 35.47 | Township |
| White Butte township | 21 | 20 | 20 | 0% | 1 | 16 | Township |
| Flat Creek township | 22 | 19 | 19 | 0% | 1 | 35.94 | Township |
| Bison township | 23 | 18 | 18 | 0% | 1 | 34.59 | Township |
| Scotch Cap township | 24 | 18 | 18 | 0% | 1 | 35.40 | Township |
| Moreau township | 25 | 17 | 17 | 0% | 0.00 | 72.02 | Township |
| Trail township | 26 | 17 | 17 | 0% | 1 | 16.05 | Township |
| Barrett township | 27 | 16 | 16 | 0% | 0.00 | 35.90 | Township |
| Cash township | 28 | 16 | 16 | 0% | 0.00 | 35.65 | Township |
| Englewood township | 29 | 16 | 16 | 0% | 0.00 | 64.78 | Township |
| Liberty township | 30 | 14 | 14 | 0% | 0.00 | 35.81 | Township |
| Maltby township | 31 | 14 | 14 | 0% | 0.00 | 35.87 | Township |
| Chaudoin township | 32 | 13 | 13 | 0% | 0.00 | 36.05 | Township |
| Ada township | 33 | 12 | 12 | 0% | 0.00 | 35.45 | Township |
| Beck-Highland township | 34 | 12 | 12 | 0% | 0.00 | 71.81 | Township |
| Duell township | 35 | 12 | 12 | 0% | 0.00 | 35.38 | Township |
| Vail township | 36 | 12 | 12 | 0% | 0.00 | 35.78 | Township |
| Glendo township | 37 | 11 | 11 | 0% | 0.00 | 35.23 | Township |
| Hall township | 38 | 9 | 9 | 0% | 0.00 | 35.54 | Township |
| Sidney township | 39 | 9 | 9 | 0% | 0.00 | 35.60 | Township |
| Vrooman township | 40 | 6 | 6 | 0% | 0.00 | 35.56 | Township |
Lemmon is the largest city in Perkins County, with a population of 1,152.
Vrooman township is the smallest city in Perkins County.
There are 40 cities in Perkins County, South Dakota.