Valley County Flag

Valley County

State:
Idaho
County Seat:
Cascade

Valley County's estimated 2026 population is 12,845 with a growth rate of 0.11% in the past year according to the most recent United States census data. Valley County is the 27th largest county in Idaho. The 2010 population was 9,788 and has seen a growth of 31.23% since that time.

12,845
Total Population
4
Population Density (mi²)
27
Population Rank (State)
14 0.11%
Annual Population Growth

Valley County Population

Demographics

Economics and Income Statistics