32 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ipswich | 1 | 957 | 931 | 0.53% | 714 | 1.34 | City |
| Cortlandt township | 2 | 625 | 616 | -0.32% | 18 | 34.33 | Township |
| Bowdle | 3 | 480 | 470 | 0.42% | 750 | 0.64 | City |
| Roscoe | 4 | 283 | 278 | 0.35% | 739 | 0.38 | City |
| Harmony township | 5 | 282 | 288 | -1.4% | 8 | 36.20 | Township |
| Hosmer | 6 | 165 | 162 | 0.61% | 167 | 0.99 | City |
| Belle township | 7 | 143 | 140 | -0.69% | 4 | 36.06 | Township |
| Rosette township | 8 | 122 | 123 | -0.81% | 3 | 36.22 | Township |
| Ipswich township | 9 | 95 | 94 | -1.04% | 3 | 35.07 | Township |
| Fountain township | 10 | 80 | 79 | -1.23% | 2 | 36.08 | Township |
| Bowdle township | 11 | 70 | 69 | 0% | 2 | 34.60 | Township |
| Huntley township | 12 | 59 | 58 | 0% | 2 | 35.65 | Township |
| Cottonwood Lake township | 13 | 49 | 48 | 0% | 1 | 34.91 | Township |
| Glen township | 14 | 46 | 45 | 0% | 1 | 34.01 | Township |
| Montpelier township | 15 | 42 | 41 | 0% | 1 | 34.82 | Township |
| Hosmer township | 16 | 41 | 40 | 0% | 1 | 34.23 | Township |
| Sangamon township | 17 | 41 | 41 | -2.38% | 1 | 35.18 | Township |
| North Bryant township | 18 | 37 | 39 | -2.63% | 1 | 34.76 | Township |
| Glover township | 19 | 36 | 33 | 0% | 1 | 34.21 | Township |
| Richland township | 20 | 35 | 37 | -2.78% | 1 | 35.75 | Township |
| Powell township | 21 | 31 | 31 | 0% | 1 | 35.71 | Township |
| Hillside township | 22 | 30 | 30 | 0% | 1 | 34.13 | Township |
| Vermont township | 23 | 30 | 30 | 0% | 1 | 34.82 | Township |
| Pembrook township | 24 | 29 | 29 | 0% | 1 | 34.84 | Township |
| Union township | 25 | 28 | 24 | 3.7% | 1 | 36.11 | Township |
| Kent township | 26 | 24 | 24 | 0% | 1 | 35.76 | Township |
| Modena township | 27 | 23 | 23 | 0% | 1 | 34.93 | Township |
| Odessa township | 28 | 19 | 19 | 0% | 1 | 34.98 | Township |
| Cleveland township | 29 | 17 | 17 | 0% | 0.00 | 35.75 | Township |
| Cloyd Valley township | 30 | 17 | 17 | 0% | 0.00 | 34.72 | Township |
| Liberty township | 31 | 9 | 9 | 0% | 0.00 | 35.02 | Township |
| Adrian township | 32 | 8 | 8 | 0% | 0.00 | 35.10 | Township |
Ipswich is the largest city in Edmunds County, with a population of 957.
Adrian township is the smallest city in Edmunds County.
There are 32 cities in Edmunds County, South Dakota.