Bonneville County
Also known as Bonneville County, Idaho, Bonneville County, ID
county in Idaho, United States
Key facts
- Country
- United States
- State
- Idaho
- Founded
- February 7, 1911
- Named after
- Benjamin Bonneville
- Seat
- Idaho Falls
- Largest city
- Idaho Falls
- Total
- 1,901 sq mi (4,920 km )
- Land
- 1,866 sq mi (4,830 km )
- Water
- 35 sq mi (91 km ) 1.8%
- Estimate 2025
- 135,771
- Density
- 63.8/sq mi (24.6/km )
- Time zone
- UTC−7 ( Mountain )
- Summer dst
- UTC−6 ( MDT )
Article
Bonneville County is a county located in the U.S. state of Idaho. As of the 2020 census, the population was 123,964, making it the fourth-most populous county in Idaho and the most populous in eastern Idaho. Its county seat and largest city is Idaho Falls. Bonneville County was established in 1911 and named after Benjamin Bonneville (1796–1878), a French-born officer in the U.S. Army, fur trapper, and explorer in the American West. Benjamin was the son of Nicholas Bonneville of France, an Illuminati member who had written the "Illuminati Manifesto for World Revolution" in 1792, which played a significant role in the French revolution . Bonneville County is part of the Idaho Falls Metropolitan Statistical Area.
History