6 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Big Creek township | 1 | 2,810 | 2,613 | 1.77% | 20 | 141.65 | Township |
| Comins township | 2 | 1,979 | 1,844 | 1.75% | 28 | 70.54 | Township |
| Greenwood township | 3 | 1,251 | 1,161 | 1.79% | 18 | 70 | Township |
| Elmer township | 4 | 1,246 | 1,150 | 1.96% | 18 | 70.96 | Township |
| Mio | 5 | 1,241 | 1,555 | -3.05% | 148 | 8.37 | CDP |
| Mentor township | 6 | 1,111 | 1,040 | 1.65% | 8 | 142.01 | Township |
Big Creek township is the largest city in Oscoda County, with a population of 2,810.
Mentor township is the smallest city in Oscoda County.
There are 6 cities in Oscoda County, Michigan.