8 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Columbus | 1 | 3,844 | 3,699 | 0.76% | 1,291 | 2.98 | City |
| Eagle Lake | 2 | 3,552 | 3,442 | 0.62% | 1,212 | 2.93 | City |
| Weimar | 3 | 2,206 | 2,071 | 1.24% | 954 | 2.31 | City |
| Garwood | 4 | 536 | 397 | 7.2% | 99 | 5.43 | CDP |
| Rock Island | 5 | 492 | 447 | 6.96% | 98 | 5.02 | CDP |
| Glidden | 6 | 440 | 547 | -3.08% | 442 | 0.99 | CDP |
| Nada | 7 | 284 | 145 | 7.17% | 43 | 6.67 | CDP |
| Sheridan | 8 | 235 | 595 | 7.31% | 44 | 5.35 | CDP |
Columbus is the largest city in Colorado County, with a population of 3,844.
Sheridan is the smallest city in Colorado County.
There are 8 cities in Colorado County, Texas.