| City | Rank | 2026 Pop. ↓ | 2020 Pop. | Annual Change | Density (/mi²) | Area (mi²) | Type |
|---|---|---|---|---|---|---|---|
| Central City | 1 | 808 | 785 | 0.12% | 291 | 3 | City |
| Black Hawk | 2 | 120 | 119 | 0% | 39 | 3 | City |
Central City is the largest city in Gilpin County, with a population of 808.
Black Hawk is the smallest city in Gilpin County, with a population of 120.
There are 2 cities in Gilpin County, Colorado.