Larimer County Flag

Larimer County

State:
Colorado
County Seat:
Fort Collins

Larimer County's estimated 2026 population is 380,384 with a growth rate of 0.82% in the past year according to the most recent United States census data. Larimer County is the 8th largest county in Colorado. The 2010 population was 300,453 and has seen a growth of 26.6% since that time.

380,384
Total Population
147
Population Density (mi²)
8
Population Rank (State)
3.1K 0.82%
Annual Population Growth

Larimer County Population

Demographics

Economics and Income Statistics