13 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Annual Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Idaho Springs | 1 | 1,674 | 1,797 | -1.47% | 702 | 2 | City |
| Georgetown | 2 | 1,290 | 1,123 | 2.63% | 1,290 | 1 | Town |
| Upper Bear Creek | 3 | 886 | 799 | -1.34% | 234 | 4 | CDP |
| Floyd Hill | 4 | 820 | 824 | -1.44% | 130 | 6 | CDP |
| Upper Witter Gulch | 5 | 764 | 725 | 7.15% | 839 | 1 | CDP |
| Brook Forest | 6 | 669 | 479 | 7.21% | 482 | 1 | CDP |
| Pine Valley | 7 | 658 | 343 | 7.17% | 800 | 1 | CDP |
| Downieville-Lawson-Dumont | 8 | 549 | 487 | -0.54% | 706 | 1 | CDP |
| Echo Hills | 9 | 453 | 414 | 7.35% | 798 | 1 | CDP |
| Empire | 10 | 320 | 337 | -1.23% | 1,190 | 0 | Town |
| Blue Valley | 11 | 214 | 263 | 7% | 203 | 1 | CDP |
| St. Mary's | 12 | 214 | 416 | -2.28% | 149 | 1 | CDP |
| Silver Plume | 13 | 185 | 200 | -1.6% | 717 | 0 | Town |
Idaho Springs is the largest city in Clear Creek County, with a population of 1,674.
Silver Plume is the smallest city in Clear Creek County, with a population of 185.
There are 13 cities in Clear Creek County, Colorado.