Adams County Flag

Adams County

State:
Colorado
County Seat:
Brighton

Adams County's estimated 2025 population is 545,077 with a growth rate of 1.09% in the past year according to the most recent United States census data. Adams County is the 5th largest county in Colorado. The 2010 population was 443,692 and has seen a growth of 22.85% since that time.

545,077
Total Population
467
Population Density (mi²)
5
Population Rank (State)
5.9K 1.09%
Annual Population Growth

Adams County Population

Demographics

Economics and Income Statistics