Bonneville County

US States / H-L / Idaho / Bonneville County

Bonneville County is named for Benjamin L E Bonneville, who was a French born explorer and who lived from 1796 to 1878.


Created:  February 7, 1911

County Seat: 

Idaho Falls  1911 – present


County Courthouse  – Idaho Falls 


Location:  605 North Capital Avenue / C Street

Built:  1920 – 1921

Style:  Neo-Classical

Architect:  Charles Aitken and Lionel E Fisher

Contractor:  W H Holden and E M Holden, North Pacific Construction Company, and S K Mittry and George Mittry


Description:  The building  faces east and is a two story brick, stucco and sandstone Art style structure. The east front has a projecting center section with recessed entrance. The roof line is flat. The interior has a high ceiling with skylight. On the south side is a modern addition which is attached to the main building.



N – Jefferson County, Madison County and Teton County

E – Teton County, Wyoming and Lincoln County, Wyoming

S – Caribou County and  Bingham County 

W – Bingham County 

















Photos take 2011