8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Geneva | 1 | 2,129 | 2,143 | -0.14% | 906 | 2.35 | City |
| Fairmont | 2 | 586 | 595 | -0.34% | 509 | 1.15 | Village |
| Exeter | 3 | 518 | 523 | -0.19% | 818 | 0.63 | Village |
| Shickley | 4 | 347 | 349 | 0% | 1,134 | 0.31 | Village |
| Milligan | 5 | 247 | 249 | 0% | 957 | 0.26 | Village |
| Ohiowa | 6 | 122 | 122 | 0% | 490 | 0.25 | Village |
| Grafton | 7 | 110 | 109 | 0% | 315 | 0.35 | Village |
| Strang | 8 | 32 | 32 | 0% | 258 | 0.12 | Village |
Geneva is the largest city in Fillmore County, with a population of 2,129.
Strang is the smallest city in Fillmore County.
There are 8 cities in Fillmore County, Nebraska.