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Idaho County Courthouse, Grangeville, Idaho

Established by the Washington Territorial Legislature in 1862, Idaho County is the largest county in Idaho, covering 8503 square miles. It is located in the north-central region of Idaho, through which the Clearwater, Salmon and Snake rivers flow. Learn about our history.

The purpose of our website is to provide visitors with helpful information about the Idaho County courthouse, its departments, services and staff, as well as general area information and helpful resources.

Thank you for visiting idahocounty.org.


Idaho County Commissioners
James A. Chmelik, Chairman
Skip Brandt & Mark Frei