There are 5 cities in Douglas County, Colorado.
City | Rank | State | 2023 Population | 2020 Census | Annual Change | Density (mi²) | Area (mi²) |
|---|---|---|---|---|---|---|---|
| Castle Rock | 1 | Colorado | 81,949 | 73,700 | 3.6% | 2,390 | 34.29 |
| Parker | 2 | Colorado | 63,457 | 58,800 | 2.57% | 2,859 | 22.20 |
| Castle Pines | 3 | Colorado | 14,769 | 11,222 | 9.59% | 1,539 | 9.59 |
| Lone Tree | 4 | Colorado | 14,202 | 14,208 | -0.01% | 1,448 | 9.81 |
| Larkspur | 5 | Colorado | 216 | 207 | 1.41% | 136 | 1.59 |
Castle Rock is the largest city in Douglas County.
Larkspur is the smallest city in Douglas County.
There are 5 cities in Douglas County, Colorado.