Summit County, Colorado Cities (2025)

8 cities

City
Rank
2025 Pop.
2020 Pop.
Change
Density
Area (mi²)
Type
Silverthorne15,2634,4553.18%1,2964.06 Town
Breckenridge24,8635,055-0.78%8056.04 Town
Frisco32,6552,924-1.99%1,5901.67 Town
Dillon49831,065-1.6%6621.49 Town
Keystone5974799-0.71%2441.40 CDP
Blue River6836876-0.95%3432.43 Town
Copper Mountain7260455-2.99%832.06 CDP
Montezuma86976-1.43%8730.08 Town