8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Le Sueur | 1 | 4,231 | 4,205 | 0.12% | 814 | 5.20 | City |
| Montgomery | 2 | 3,673 | 3,260 | 2.31% | 1,461 | 2.51 | City |
| Le Center | 3 | 2,522 | 2,509 | 0.12% | 1,505 | 1.68 | City |
| Waterville | 4 | 1,756 | 1,746 | 0.11% | 1,042 | 1.69 | City |
| Cleveland | 5 | 780 | 742 | 1.04% | 1,426 | 0.55 | City |
| Elysian | 6 | 769 | 706 | 1.72% | 653 | 1.18 | City |
| Kasota | 7 | 712 | 716 | -0.14% | 573 | 1.24 | City |
| Heidelberg | 8 | 133 | 135 | 0% | 254 | 0.52 | City |
Le Sueur is the largest city in Le Sueur County, with a population of 4,231.
Heidelberg is the smallest city in Le Sueur County.
There are 8 cities in Le Sueur County, Minnesota.