Neighbors -
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Gem County
Ada County
Owyhee County
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Canyon County Archives

This county is available for adoption.
Contact State Coordinator at
or visit our "Volunteer" page for detailed information on how to become a County Coordinator.


Historical Background

Canyon County was created from Ada County on March 7, 1891 with the county seat at Caldwell.

"Canyon County was named for the small canyon through which the Boise River flows near Caldwell. What is now Canyon County played an important part in the early history of Idaho. Efforts to establish post at the mouth of the Boise River in 1812-13 and in 1819 were not successful. The Hudson Bay Company established Fort Boise in 1834 near what is now Parma and it was abandoned in 1855. Emigrants traveled through Canyon County on the Oregon Trail, and in 1854, twenty-one persons were killed in the Ward Massacre south of Meridian. The early settlers located farms along the Boise and Snake Rivers, and population quickly expanded when the Oregon Shortline crossed the county in 1883. Caldwell was platted in 1883 and in corporated in 1889. Nampa was incorporated in 1890 and the College of Idaho was founded at Caldwell in 1891." -- Idaho Almanac, 1977 Edition, State of Idaho.

Cities and Towns in Canyon Co.

Caldwell Nampa
Greenleaf Homedale
Melba Middleton
Notus Parma

Historic Post offices

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Updated 19 August 2011

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If you have any Canyon County related photos, data or web sites that you would like to have added to this site, please contact me. What isn't here that you would like to see? Comments and suggestions are welcome.--

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