21 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Big Rapids | 1 | 8,027 | 7,739 | 0.73% | 1,806 | 4.45 | City |
| Morton township | 2 | 4,802 | 4,440 | 1.2% | 145 | 33.04 | Township |
| Big Rapids charter township | 3 | 4,048 | 3,935 | 0.17% | 133 | 30.47 | Township |
| Green charter township | 4 | 3,410 | 3,227 | 0.98% | 92 | 36.97 | Township |
| Mecosta township | 5 | 2,892 | 2,752 | 0.77% | 85 | 34.03 | Township |
| Canadian Lakes | 6 | 2,533 | 2,760 | -0.59% | 245 | 10.33 | CDP |
| Aetna township | 7 | 2,361 | 2,245 | 0.9% | 66 | 35.55 | Township |
| Colfax township | 8 | 2,046 | 1,961 | 0.69% | 58 | 35.11 | Township |
| Austin township | 9 | 1,806 | 1,718 | 0.84% | 51 | 35.67 | Township |
| Fork township | 10 | 1,707 | 1,623 | 0.83% | 49 | 34.78 | Township |
| Martiny township | 11 | 1,681 | 1,598 | 0.9% | 53 | 31.98 | Township |
| Wheatland township | 12 | 1,451 | 1,396 | 0.69% | 41 | 35.48 | Township |
| Chippewa township | 13 | 1,283 | 1,225 | 0.79% | 39 | 32.98 | Township |
| Millbrook township | 14 | 1,115 | 1,071 | 0.72% | 31 | 35.77 | Township |
| Hinton township | 15 | 1,110 | 1,051 | 0.91% | 31 | 35.73 | Township |
| Morley | 16 | 528 | 510 | 0.76% | 590 | 0.90 | Village |
| Mecosta | 17 | 500 | 404 | 3.95% | 450 | 1.11 | Village |
| Paris township | 18 | 474 | 490 | -0.84% | 13 | 36.01 | Township |
| Barryton | 19 | 415 | 399 | 0.73% | 434 | 0.96 | Village |
| Paris | 20 | 349 | 251 | 7.06% | 406 | 0.86 | CDP |
| Stanwood | 21 | 213 | 203 | 0.95% | 880 | 0.24 | Village |
Big Rapids is the largest city in Mecosta County, with a population of 8,027.
Stanwood is the smallest city in Mecosta County.
There are 21 cities in Mecosta County, Michigan.