Summit County Flag

Summit County

State:
Colorado
County Seat:
Breckenridge

Summit County's estimated 2025 population is 30,123 with a growth rate of -0.56% in the past year according to the most recent United States census data. Summit County is the 20th largest county in Colorado. The 2010 population was 28,075 and has seen a growth of 7.29% since that time.

30,123
Total Population
50
Population Density (mi²)
20
Population Rank (State)
-171 -0.56%
Annual Population Growth

Summit County Population

Demographics

Economics and Income Statistics