21 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Escanaba | 1 | 12,299 | 12,408 | -0.18% | 965 | 12.74 | City |
| Gladstone | 2 | 5,226 | 5,253 | -0.1% | 1,032 | 5.07 | City |
| Wells township | 3 | 4,846 | 4,874 | -0.08% | 122 | 39.72 | Township |
| Escanaba township | 4 | 3,579 | 3,502 | 0.76% | 60 | 59.58 | Township |
| Ford River township | 5 | 2,033 | 2,028 | 0.05% | 31 | 64.77 | Township |
| Masonville township | 6 | 1,637 | 1,640 | 0% | 10 | 166.54 | Township |
| Bark River township | 7 | 1,598 | 1,596 | 0.13% | 35 | 45.59 | Township |
| Wells township | 8 | 1,582 | 1,588 | 0% | 46 | 34.49 | Township |
| Rapid River township | 9 | 1,330 | 1,247 | 1.45% | 38 | 35.13 | Township |
| Brampton township | 10 | 1,028 | 1,028 | 0% | 43 | 23.74 | Township |
| Garden township | 11 | 774 | 775 | 0% | 5 | 159.85 | Township |
| Ensign township | 12 | 744 | 746 | 0% | 13 | 58.52 | Township |
| Maple Ridge township | 13 | 694 | 693 | 0% | 6 | 108.28 | Township |
| Cornell township | 14 | 566 | 565 | 0% | 9 | 59.79 | Township |
| Nahma township | 15 | 462 | 466 | -0.22% | 3 | 168.06 | Township |
| Rapid River | 16 | 381 | 279 | 7.02% | 302 | 1.26 | CDP |
| Bay de Noc township | 17 | 299 | 300 | 0% | 4 | 67.65 | Township |
| Fairbanks township | 18 | 298 | 298 | 0% | 6 | 47.34 | Township |
| Rock | 19 | 230 | 158 | 6.98% | 255 | 0.90 | CDP |
| Wells township | 20 | 217 | 215 | 0% | 1 | 154.32 | Township |
| Garden | 21 | 185 | 189 | -0.54% | 224 | 0.83 | Village |
Escanaba is the largest city in Delta County, with a population of 12,299.
Garden is the smallest city in Delta County.
There are 21 cities in Delta County, Michigan.