| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Columbus | 1 | 3,854 | 3,688 | 0.86% | 1,282 | 3 | City |
| Eagle Lake | 2 | 3,575 | 3,435 | 0.82% | 1,220 | 3 | City |
| Weimar | 3 | 2,224 | 2,067 | 1.23% | 962 | 2 | City |
Columbus is the largest city in Colorado County, with a population of 3,854.
Weimar is the smallest city in Colorado County, with a population of 2,224.
There are 3 cities in Colorado County, Texas.