9 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fremont | 1 | 15,752 | 15,902 | -0.19% | 1,848 | 8.52 | City |
| Clyde | 2 | 6,355 | 6,310 | 0.14% | 1,216 | 5.22 | City |
| Gibsonburg | 3 | 2,476 | 2,485 | -0.08% | 1,067 | 2.32 | Village |
| Woodville | 4 | 1,973 | 2,002 | -0.3% | 1,464 | 1.35 | Village |
| Lindsey | 5 | 452 | 456 | -0.22% | 289 | 1.56 | Village |
| Vickery | 6 | 267 | 114 | 3.49% | 631 | 0.42 | CDP |
| Helena | 7 | 208 | 210 | 0% | 715 | 0.29 | Village |
| Burgoon | 8 | 176 | 181 | -0.56% | 1,275 | 0.14 | Village |
| Hessville | 9 | 21 | 84 | -38.23% | 30 | 0.69 | CDP |
Fremont is the largest city in Sandusky County, with a population of 15,752.
Hessville is the smallest city in Sandusky County.
There are 9 cities in Sandusky County, Ohio.