This county is available for adoption. If you are interested in becoming the County Coordinator for
or any other Idaho county. Contact the State Coordinator.
Or visit our "Volunteer" page for detailed information on how to become a County Coordinator.
* * * 1940 Census to be Released * * *
1940 enumeration district maps - Once there select the "State", and go to "County" and then click on "Get ED Map Images" and you will get the entire county.Since 1940 indexes are works in progress, you will have to find your ancestors by the district in which they were counted.
familysearch.org is recruiting people to help with indexing. Local LDS Family History Centers and Idaho Genealogical Society are organizing groups.
Welcome to Bonneville County
Idaho Falls, originally called Eagle Rock, is the county seat.
Other communities are Ammon, Beachs Corner, Bone, Coltman, Cotton, Dehlin, Gerrard, Gray, Hackman, Indian, Iona, Irwin, Lincoln, Milo, New Sweden, Orvin, Osgood, Ozone, Palisades, Payne, Poplar, Swan Valley, Taylorville, and Ucon.
The County was established February 7, 1911 from the north and east parts of Bingham county. It was named for Captain B. L. E. Bonneville, of the U. S. Army, who explored the Snake River area in the 1830s. A settlement began at the site of the Eagle Rock ferry on the Snake River in 1864, this settlement was renamed Idaho Falls in 1891.
More than half the county is in the Targhee and Caribou National Forests. It includes the Gray's Lake National Wildlife Refuge. Major industries include farming and the Idaho National Engineering Laboratory under the direction of The U.S. Department of Energy. It covers 1,897 square miles.
* * *Updated 17 March 2012 * * *