28 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Saginaw | 1 | 42,567 | 44,112 | -0.72% | 2,490 | 17.10 | City |
| Saginaw charter township | 2 | 40,702 | 41,622 | -0.43% | 1,662 | 24.50 | Township |
| Thomas township | 3 | 11,897 | 11,914 | 0.12% | 386 | 30.84 | Township |
| Tittabawassee township | 4 | 11,064 | 10,610 | 0.92% | 315 | 35.16 | Township |
| Bridgeport charter township | 5 | 9,798 | 10,081 | -0.52% | 283 | 34.60 | Township |
| Buena Vista charter township | 6 | 7,453 | 7,647 | -0.48% | 210 | 35.50 | Township |
| Birch Run township | 7 | 5,804 | 5,882 | -0.26% | 163 | 35.51 | Township |
| Carrollton township | 8 | 5,542 | 5,735 | -0.65% | 1,656 | 3.35 | Township |
| Frankenmuth | 9 | 5,251 | 5,030 | 0.84% | 1,683 | 3.12 | City |
| Kochville township | 10 | 5,085 | 4,904 | 1.19% | 274 | 18.57 | Township |
| Chesaning township | 11 | 4,646 | 4,740 | -0.26% | 136 | 34.27 | Township |
| Taymouth township | 12 | 3,981 | 4,064 | -0.38% | 112 | 35.39 | Township |
| St. Charles township | 13 | 3,083 | 3,178 | -0.65% | 84 | 36.49 | Township |
| Maple Grove township | 14 | 2,627 | 2,672 | -0.27% | 73 | 35.80 | Township |
| Swan Creek township | 15 | 2,389 | 2,415 | -0.29% | 104 | 22.96 | Township |
| Chesaning | 16 | 2,380 | 2,459 | -0.67% | 773 | 3.08 | Village |
| Brady township | 17 | 2,124 | 2,141 | -0.24% | 58 | 36.78 | Township |
| Albee township | 18 | 2,000 | 2,044 | -0.45% | 56 | 36.03 | Township |
| St. Charles | 19 | 1,929 | 1,996 | -0.67% | 922 | 2.09 | Village |
| Spaulding township | 20 | 1,903 | 1,974 | -0.73% | 74 | 25.86 | Township |
| Frankenmuth township | 21 | 1,863 | 1,888 | -0.37% | 58 | 32.17 | Township |
| Blumfield township | 22 | 1,821 | 1,867 | -0.49% | 51 | 35.65 | Township |
| Brant township | 23 | 1,810 | 1,840 | -0.33% | 49 | 36.84 | Township |
| James township | 24 | 1,733 | 1,791 | -0.63% | 104 | 16.73 | Township |
| Jonesfield township | 25 | 1,572 | 1,618 | -0.63% | 62 | 25.20 | Township |
| Birch Run | 26 | 1,530 | 1,555 | -0.33% | 813 | 1.88 | Village |
| Merrill | 27 | 661 | 685 | -0.75% | 951 | 0.69 | Village |
| Oakley | 28 | 281 | 290 | -0.71% | 272 | 1.03 | Village |
Saginaw is the largest city in Saginaw County, with a population of 42,567.
Oakley is the smallest city in Saginaw County.
There are 28 cities in Saginaw County, Michigan.