| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Franklin | 1 | 875 | 925 | -0.91% | 882 | 1 | City |
| Hildreth | 2 | 362 | 383 | -1.09% | 633 | 1 | Village |
| Campbell | 3 | 255 | 270 | -1.16% | 617 | 0 | Village |
| Upland | 4 | 120 | 126 | -0.83% | 278 | 0 | Village |
| Bloomington | 5 | 108 | 109 | 0% | 136 | 1 | Village |
| Naponee | 6 | 83 | 85 | -1.19% | 359 | 0 | Village |
| Riverton | 7 | 56 | 57 | -1.75% | 142 | 0 | Village |
Franklin is the largest city in Franklin County, with a population of 875.
Riverton is the smallest city in Franklin County, with a population of 56.
There are 7 cities in Franklin County, Nebraska.