10 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Napoleon | 1 | 737 | 756 | -0.54% | 533 | 1.38 | City |
| Gackle | 2 | 279 | 286 | -0.36% | 519 | 0.54 | City |
| Glendale township | 3 | 42 | 40 | 2.44% | 1 | 36.62 | Township |
| Fredonia | 4 | 38 | 38 | 0% | 158 | 0.24 | City |
| Red Lake township | 5 | 31 | 29 | 3.33% | 1 | 33.57 | Township |
| Sealy township | 6 | 31 | 29 | 0% | 1 | 36.36 | Township |
| Janke township | 7 | 28 | 26 | 3.7% | 1 | 35.99 | Township |
| Gutschmidt township | 8 | 23 | 23 | 0% | 1 | 35.98 | Township |
| Finn township | 9 | 21 | 21 | 0% | 1 | 33.78 | Township |
| Haag township | 10 | 19 | 19 | 0% | 1 | 35.97 | Township |
Napoleon is the largest city in Logan County, with a population of 737.
Haag township is the smallest city in Logan County.
There are 10 cities in Logan County, North Dakota.