| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Columbus | 1 | 25,531 | 24,088 | 1.12% | 2,357 | 11 | City |
| Humphrey | 2 | 883 | 847 | 0.91% | 1,701 | 1 | City |
| Duncan | 3 | 389 | 384 | 0.26% | 831 | 0 | Village |
| Platte Center | 4 | 340 | 335 | 0.29% | 1,137 | 0 | Village |
| Lindsay | 5 | 334 | 279 | 0.91% | 705 | 0 | Village |
| Monroe | 6 | 292 | 289 | 0.34% | 1,497 | 0 | Village |
| Creston | 7 | 174 | 174 | 0% | 841 | 0 | Village |
Columbus is the largest city in Platte County, with a population of 25,531.
Creston is the smallest city in Platte County, with a population of 174.
There are 7 cities in Platte County, Nebraska.