Bonneville County Flag

Bonneville County

State:
Idaho
County Seat:
Idaho Falls

Bonneville County's estimated 2025 population is 135,012 with a growth rate of 1.37% in the past year according to the most recent United States census data. Bonneville County is the 4th largest county in Idaho. The 2010 population was 104,682 and has seen a growth of 28.97% since that time.

135,012
Total Population
72
Population Density (mi²)
4
Population Rank (State)
1.8K 1.37%
Annual Population Growth

Bonneville County Population

Demographics

Economics and Income Statistics