15 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Oakley | 1 | 2,045 | 2,162 | -1.45% | 19 | 107 | Township |
| Oakley | 2 | 1,946 | 2,035 | -0.92% | 1,012 | 2 | City |
| Winona | 3 | 227 | 248 | -2.58% | 2 | 107 | Township |
| Winona | 4 | 174 | 188 | -1.69% | 667 | 0 | City |
| Monument | 5 | 116 | 118 | 0% | 1 | 107 | Township |
| Monument | 6 | 98 | 35 | 7.69% | 182 | 1 | CDP |
| Russell Springs | 7 | 50 | 52 | 0% | 0.00 | 108 | Township |
| Western | 8 | 44 | 47 | -2.22% | 0.00 | 108 | Township |
| McAllaster | 9 | 34 | 35 | 0% | 0.00 | 106 | Township |
| Paxton | 10 | 28 | 29 | 0% | 0.00 | 72 | Township |
| Russell Springs | 11 | 22 | 24 | 0% | 31 | 1 | City |
| Augustine | 12 | 19 | 22 | -5% | 0.00 | 72 | Township |
| Elkader | 13 | 12 | 12 | 0% | 0.00 | 108 | Township |
| Logansport | 14 | 8 | 8 | 0% | 0.00 | 107 | Township |
| Lees | 15 | 6 | 6 | 0% | 0.00 | 71 | Township |
Oakley is the largest city in Logan County, with a population of 2,045.
Lees is the smallest city in Logan County, with a population of 6.
There are 15 cities in Logan County, Kansas.