Idaho Falls Flag

Idaho Falls

County Seat:
Yes
Area (mi²):
27.157
State:
Idaho

Idaho Falls is a city located in Bonneville County, Idaho. Idaho Falls has a 2026 population of 69,523. It is also the county seat of Bonneville County. Idaho Falls is currently growing at a rate of 2.13% annually and its population has increased by 5.45% since the most recent census, which recorded a population of 65,929 in 2020.

69.5K
Total Population
2,560
Density (mi²)
1.5K 2.13%
Growth

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)