| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Junction City | 1 | 22,359 | 22,952 | -0.99% | 1,937 | 12 | City |
| Milford | 2 | 400 | 407 | -0.99% | 699 | 1 | City |
Junction City is the largest city in Geary County, with a population of 22,359.
Milford is the smallest city in Geary County, with a population of 400.
There are 2 cities in Geary County, Kansas.