Idaho, County Naturalizations, 1861-1974

County District Court naturalization records from Alturas, Bannock, Bear Lake, Benewah, Bingham, Blaine, Bonner, Bonneville, Butte, Canyon, Cassia, Clark, Clearwater, Custer, Elmore, Franklin, Fremont, Gooding, Idaho, Jefferson, Kootenai, Latah, Lemhi, Lewis, Lincoln, Logan, Madison, Minidoka, Nez Perce, Oneida, Owyhee, Power, Shoshone, Teton, Valley and Washington counties. Coverage dates will vary by county. Alturas and Logan counties were abolished in 1895 at the creation of Blaine and Lincoln.