32 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Ipswich | 1 | 933 | 926 | 0.11% | 696 | 1 | City |
| Cortlandt | 2 | 614 | 622 | -1.13% | 18 | 34 | Township |
| Bowdle | 3 | 474 | 468 | 0.21% | 741 | 1 | City |
| Harmony | 4 | 285 | 289 | -0.7% | 8 | 36 | Township |
| Roscoe | 5 | 279 | 278 | 0% | 728 | 0 | City |
| Hosmer | 6 | 159 | 159 | 0% | 161 | 1 | City |
| Belle | 7 | 137 | 141 | -1.44% | 4 | 36 | Township |
| Rosette | 8 | 119 | 123 | -1.65% | 3 | 36 | Township |
| Ipswich | 9 | 98 | 95 | 0% | 3 | 35 | Township |
| Fountain | 10 | 77 | 79 | -1.28% | 2 | 36 | Township |
| Bowdle | 11 | 67 | 69 | -1.47% | 2 | 35 | Township |
| Huntley | 12 | 55 | 57 | -1.79% | 2 | 36 | Township |
| Hosmer | 13 | 44 | 46 | -2.22% | 1 | 34 | Township |
| Glen | 14 | 43 | 45 | -2.27% | 1 | 34 | Township |
| North Bryant | 15 | 41 | 39 | 0% | 1 | 35 | Township |
| Cottonwood Lake | 16 | 40 | 40 | 0% | 1 | 35 | Township |
| Montpelier | 17 | 40 | 42 | -2.44% | 1 | 35 | Township |
| Richland | 18 | 39 | 37 | 0% | 1 | 36 | Township |
| Sangamon | 19 | 39 | 41 | -2.5% | 1 | 35 | Township |
| Glover | 20 | 32 | 32 | 0% | 1 | 34 | Township |
| Hillside | 21 | 32 | 32 | 0% | 1 | 34 | Township |
| Powell | 22 | 30 | 30 | 0% | 1 | 36 | Township |
| Vermont | 23 | 30 | 30 | 0% | 1 | 35 | Township |
| Pembrook | 24 | 29 | 29 | 0% | 1 | 35 | Township |
| Union | 25 | 29 | 26 | 0% | 1 | 36 | Township |
| Kent | 26 | 27 | 25 | 0% | 1 | 36 | Township |
| Modena | 27 | 27 | 27 | 0% | 1 | 35 | Township |
| Odessa | 28 | 19 | 19 | 0% | 1 | 35 | Township |
| Cleveland | 29 | 18 | 18 | 0% | 1 | 36 | Township |
| Cloyd Valley | 30 | 17 | 17 | 0% | 0.00 | 35 | Township |
| Liberty | 31 | 9 | 9 | 0% | 0.00 | 35 | Township |
| Adrian | 32 | 7 | 7 | 0% | 0.00 | 35 | Township |
Ipswich is the largest city in Edmunds County, with a population of 933.
Adrian is the smallest city in Edmunds County, with a population of 7.
There are 32 cities in Edmunds County, South Dakota.