Home › Idaho › Idaho Falls

Idaho Falls, Idaho

Located in Bonneville County, Idaho, Idaho Falls was established in 1864. Idaho National Laboratory is the nation's lead nuclear energy research facility. The SL-1 accident in 1961 was the first fatal nuclear reactor accident in the U.S.
Trending in Idaho Falls
Latest updates coming soon
2 hours ago
More local news on the way
5 hours ago
Founded 1864 | Population 67,000 | Peak 67,000 (2024) | County Bonneville County

Top 10 Most Important Events for Idaho Falls, Idaho

undefined
1864Founded: Snake River crossing.
undefined
1914Economic Development: Idaho Falls grew through the oil and petroleum industry.
undefined
1949INL: Idaho National Laboratory established.
undefined
1961Nuclear Accident: SL-1 reactor accident kills 3; first fatal U.S. nuclear accident.
undefined
2010Modern Era: Idaho Falls continued to develop as part of the region, with new infrastructure and community amenities.
🧠
How Well Do You Know Idaho Falls?
5 questions • 2 minutes
Take the Quiz →

Latest News in Idaho Falls

News articles will appear here as they're published.

Complete Historical Timeline

1864 Culture
Founded
1914 Industry
Economic Development
1949 Science
INL
1961 Disaster
Nuclear Accident
2010 Culture
Modern Era

Did You Know?

1
Idaho National Laboratory is the nation's lead nuclear energy research facility.
2
The SL-1 accident in 1961 was the first fatal nuclear reactor accident in the U.S.
3
Gateway to Yellowstone — about 2 hours away.
4
Idaho Falls is located in Bonneville County, Idaho.
5
Idaho Falls was founded in 1864.
See something that needs correcting?
We take accuracy seriously. Help us keep Idaho Falls's history right.