Meanings
proper noun
- One of 44 counties in Idaho, United States. County seat: Grangeville.
Origin
Named after the "Idaho", a Columbia River steamer launched in 1860, the name predating the formation of the Idaho Territory in 1863; the county was created in 1864.
Full word history & related roots →Cite this entry
APA
Idaho County. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Idaho%20County
MLA
“Idaho County.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Idaho%20County. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “Idaho County,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Idaho%20County.
Source: Idaho County on Wiktionary, CC BY-SA 4.0.