21 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Mills | 1 | 4,056 | 3,975 | 0.4% | 119 | 34 | Township |
| West Branch | 2 | 2,623 | 2,577 | 0.34% | 77 | 34 | Township |
| West Branch | 3 | 2,364 | 2,348 | 0.13% | 1,536 | 2 | City |
| South Branch | 4 | 1,817 | 1,642 | 2.14% | 17 | 105 | Township |
| West Branch | 5 | 1,732 | 1,699 | 0.35% | 49 | 35 | Township |
| Churchill | 6 | 1,567 | 1,545 | 0.26% | 44 | 36 | Township |
| Edwards | 7 | 1,385 | 1,365 | 0.29% | 40 | 35 | Township |
| Hill | 8 | 1,268 | 1,252 | 0.24% | 39 | 33 | Township |
| Rose | 9 | 1,263 | 1,238 | 0.48% | 24 | 53 | Township |
| Ogemaw | 10 | 1,171 | 1,156 | 0.26% | 32 | 36 | Township |
| Foster | 11 | 802 | 784 | 0.5% | 9 | 89 | Township |
| Cumming | 12 | 735 | 720 | 0.41% | 21 | 34 | Township |
| Logan | 13 | 601 | 590 | 0.33% | 17 | 35 | Township |
| Rose City | 14 | 582 | 574 | 0.34% | 540 | 1 | City |
| Klacking | 15 | 582 | 571 | 0.34% | 16 | 36 | Township |
| West Branch | 16 | 462 | 449 | 0.43% | 13 | 36 | Township |
| Goodar | 17 | 358 | 352 | 0.28% | 10 | 35 | Township |
| South Branch | 18 | 351 | 345 | 0.29% | 10 | 36 | Township |
| Lupton | 19 | 259 | 299 | -2.26% | 80 | 3 | CDP |
| Prescott | 20 | 230 | 225 | 0.44% | 207 | 1 | Village |
| West Branch | 21 | 57 | 57 | 0% | 1 | 108 | Township |
Mills is the largest city in Ogemaw County, with a population of 4,056.
West Branch is the smallest city in Ogemaw County, with a population of 57.
There are 21 cities in Ogemaw County, Michigan.