It came into being on January 1, 1999, as a result of the Polish local government reforms passed in 1998.
Benewah County Idaho was established in 1915.
The Cherokee County was established in the year of 1846. The Cherokee County was established in the Nacogdoches County and was organized in the same year.
Ada County was Established in 1864.
Bannock County Idaho was established in 1893.
Bingham County was established in 1885.
Bonner County Idaho was established in 1907.
Camas County was established in 1917.
Fermont County Idaho was established in 1893.
Adams County Idaho was Established in 1911.
Blaine County Idaho was established in 1895.
Bonneville County Idaho was established in 1911.
Butte County Idaho was established in 1917.