13 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Garrison | 1 | 1,462 | 1,466 | -0.07% | 1,045 | 1.40 | City |
| Washburn | 2 | 1,275 | 1,295 | -0.31% | 757 | 1.69 | City |
| Underwood | 3 | 766 | 786 | -0.52% | 755 | 1.01 | City |
| Wilton | 4 | 710 | 720 | -0.28% | 1,277 | 0.56 | City |
| Turtle Lake | 5 | 535 | 540 | -0.19% | 1,045 | 0.51 | City |
| Max | 6 | 319 | 328 | -0.62% | 409 | 0.78 | City |
| Riverdale | 7 | 224 | 221 | 0.45% | 161 | 1.39 | City |
| White Shield | 8 | 166 | 208 | -6.21% | 44 | 3.80 | CDP |
| Mercer | 9 | 148 | 90 | 8.82% | 667 | 0.22 | City |
| Coleharbor | 10 | 69 | 59 | 2.99% | 379 | 0.18 | City |
| Butte | 11 | 68 | 68 | 0% | 276 | 0.25 | City |
| Benedict | 12 | 66 | 65 | 0% | 264 | 0.25 | City |
| Ruso | 13 | 5 | 5 | 0% | 20 | 0.25 | City |
Garrison is the largest city in McLean County, with a population of 1,462.
Ruso is the smallest city in McLean County.
There are 13 cities in McLean County, North Dakota.