12 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Albert township | 1 | 2,652 | 2,462 | 1.14% | 40 | 65.65 | Township |
| Hillman township | 2 | 2,176 | 2,006 | 1.3% | 32 | 67.64 | Township |
| Briley township | 3 | 1,832 | 1,696 | 1.22% | 27 | 68.36 | Township |
| Montmorency township | 4 | 1,100 | 1,021 | 1.1% | 8 | 136.61 | Township |
| Lewiston | 5 | 738 | 863 | -5.63% | 260 | 2.83 | CDP |
| Avery township | 6 | 723 | 662 | 1.4% | 21 | 35.02 | Township |
| Hillman | 7 | 674 | 623 | 1.51% | 407 | 1.66 | Village |
| Vienna township | 8 | 577 | 534 | 1.23% | 8 | 69.10 | Township |
| Rust township | 9 | 566 | 522 | 1.25% | 8 | 68.52 | Township |
| Atlanta | 10 | 513 | 629 | -3.93% | 142 | 3.61 | CDP |
| Canada Creek Ranch | 11 | 316 | 288 | 0% | 142 | 2.23 | CDP |
| Loud township | 12 | 294 | 267 | 1.73% | 8 | 35.77 | Township |
Albert township is the largest city in Montmorency County, with a population of 2,652.
Loud township is the smallest city in Montmorency County.
There are 12 cities in Montmorency County, Michigan.