15 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Fremont | 1 | 15,774 | 15,894 | -0.13% | 1,805 | 9 | City |
| Clyde | 2 | 6,385 | 6,309 | 0.2% | 1,222 | 5 | City |
| Ballville | 3 | 6,027 | 6,035 | 0.08% | 179 | 34 | Township |
| Green Creek | 4 | 3,485 | 3,433 | 0.32% | 116 | 30 | Township |
| Woodville | 5 | 3,321 | 3,296 | 0.12% | 101 | 33 | Township |
| Gibsonburg | 6 | 2,485 | 2,487 | 0% | 1,071 | 2 | Village |
| York | 7 | 2,422 | 2,431 | 0.08% | 74 | 33 | Township |
| Washington | 8 | 2,280 | 2,289 | 0.09% | 47 | 49 | Township |
| Woodville | 9 | 1,982 | 2,003 | -0.15% | 1,470 | 1 | Village |
| Townsend | 10 | 1,533 | 1,526 | 0.2% | 47 | 32 | Township |
| Rice | 11 | 1,248 | 1,241 | 0.24% | 58 | 21 | Township |
| Riley | 12 | 1,115 | 1,120 | 0% | 29 | 38 | Township |
| Lindsey | 13 | 455 | 454 | 0% | 291 | 2 | Village |
| Helena | 14 | 206 | 212 | -0.48% | 708 | 0 | Village |
| Burgoon | 15 | 181 | 181 | 0% | 1,312 | 0 | Village |
Fremont is the largest city in Sandusky County, with a population of 15,774.
Burgoon is the smallest city in Sandusky County, with a population of 181.
There are 15 cities in Sandusky County, Ohio.