7 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Wauseon | 1 | 7,403 | 7,558 | -0.35% | 1,392 | 5 | City |
| Archbold | 2 | 4,412 | 4,511 | -0.36% | 895 | 5 | Village |
| Swanton | 3 | 3,883 | 3,889 | -0.03% | 1,143 | 3 | Village |
| Delta | 4 | 3,307 | 3,321 | -0.06% | 827 | 4 | Village |
| Fayette | 5 | 1,271 | 1,304 | -0.39% | 1,305 | 1 | Village |
| Lyons | 6 | 582 | 602 | -0.51% | 822 | 1 | Village |
| Metamora | 7 | 546 | 564 | -0.55% | 668 | 1 | Village |
Wauseon is the largest city in Fulton County, with a population of 7,403.
Metamora is the smallest city in Fulton County, with a population of 546.
There are 7 cities in Fulton County, Ohio.