7 cities
| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Columbus | 1 | 25,642 | 24,093 | 1.02% | 2,367 | 11 | City |
| Humphrey | 2 | 898 | 855 | 0.79% | 1,730 | 1 | City |
| Duncan | 3 | 391 | 382 | 0.51% | 835 | 0 | Village |
| Platte Center | 4 | 340 | 336 | 0.29% | 1,137 | 0 | Village |
| Lindsay | 5 | 304 | 283 | 1.33% | 641 | 0 | Village |
| Monroe | 6 | 296 | 292 | 0.34% | 1,518 | 0 | Village |
| Creston | 7 | 176 | 175 | 0% | 850 | 0 | Village |
Columbus is the largest city in Platte County, with a population of 25,642.
Creston is the smallest city in Platte County, with a population of 176.
There are 7 cities in Platte County, Nebraska.