13 cities
| City | Rank | 2025 Pop. ↓ | 2020 Pop. | Change | Density | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Idaho Springs | 1 | 1,646 | 1,801 | -1.85% | 690 | 2.38 | City |
| Georgetown | 2 | 1,350 | 1,117 | 3.61% | 1,350 | 1 | Town |
| Upper Bear Creek | 3 | 886 | 799 | -1.34% | 234 | 3.79 | CDP |
| Floyd Hill | 4 | 820 | 824 | -1.44% | 130 | 6.29 | CDP |
| Upper Witter Gulch | 5 | 764 | 725 | 7.15% | 839 | 0.91 | CDP |
| Brook Forest | 6 | 669 | 479 | 7.21% | 482 | 1.39 | CDP |
| Pine Valley | 7 | 658 | 343 | 7.17% | 800 | 0.82 | CDP |
| Downieville-Lawson-Dumont | 8 | 549 | 487 | -0.54% | 706 | 0.78 | CDP |
| Echo Hills | 9 | 453 | 414 | 7.35% | 798 | 0.57 | CDP |
| Empire | 10 | 318 | 340 | -1.24% | 1,182 | 0.27 | Town |
| Blue Valley | 11 | 214 | 263 | 7% | 203 | 1.05 | CDP |
| St. Mary's | 12 | 214 | 416 | -2.28% | 149 | 1.44 | CDP |
| Silver Plume | 13 | 186 | 205 | -2.11% | 721 | 0.26 | Town |
Idaho Springs is the largest city in Clear Creek County, with a population of 1,646.
Silver Plume is the smallest city in Clear Creek County.
There are 13 cities in Clear Creek County, Colorado.