The following counties in Idaho have historic locations on the National Register of Historic places. Please select a county in Idaho to see the different historic places in the county.

Ada County Historic Locations	Adams County Historic Locations
Bannock County Historic Locations	Bear Lake County Historic Locations
Benewah County Historic Locations	Bingham County Historic Locations
Blaine County Historic Locations	Boise County Historic Locations
Bonner County Historic Locations	Bonneville County Historic Locations
Boundary County Historic Locations	Butte County Historic Locations
Camas County Historic Locations	Canyon County Historic Locations
Caribou County Historic Locations	Cassia County Historic Locations
Clark County Historic Locations	Clearwater County Historic Locations
Custer County Historic Locations	Elmore County Historic Locations
Franklin County Historic Locations	Fremont County Historic Locations
Gem County Historic Locations	Gooding County Historic Locations
Idaho County Historic Locations	Jefferson County Historic Locations
Jerome County Historic Locations	Kootenai County Historic Locations
Latah County Historic Locations	Lemhi County Historic Locations
Lewis County Historic Locations	Lincoln County Historic Locations
Madison County Historic Locations	Minidoka County Historic Locations
Nez Perce County Historic Locations	Oneida County Historic Locations
Owyhee County Historic Locations	Payette County Historic Locations
Power County Historic Locations	Shoshone County Historic Locations
Teton County Historic Locations	Twin Falls County Historic Locations
Valley County Historic Locations	Washington County Historic Locations