IDGenWeb Project

a part of the USGenWeb Project

IDGenWeb Project - Counties

IDAHO COUNTIES

Each county in Idaho have its own website exclusively for that county's genealogical resources. There are two ways to access our counties.

If you see any of the county with the "Adopt Me" under the County Coordinator's contact list, we have a vacancy. If you have research expertise for that county and would like to consider joining our project as a County Coordinator. Click on "Adopt Me" link to notify us of your interest.

Counties Table

Below are links to each available county in the left column. If you desire to contact the County Coordinator by email, click their name in the right column of their assigned county.

County Date Formed Parent Counties County Coordinator
Ada 22 Dec 1864 Boise
Adams 3 Mar 1911 Washington
Alturas (defunct) 1864-1895 Original county See Blaine County
Bannock 6 Mar 1893 Bingham
Bear Lake 5 Jan 1875 Oneida
Benewah 23 Jan 1915 Kootenai
Bingham 13 Jan 1885 Oneida
Blaine 5 Mar 1895 Alturas
Boise 4 Feb 1864 Original county
Bonner 21 Feb 1907 Kootenai
Bonneville 7 Feb 1911 Bingham
Boundary 23 Jan 1915 Bonner
Butte 6 Feb 1917 Bingham, Blaine, and Jefferson
Camas 6 Feb 1917 Blaine
Canyon 7 Mar 1891 Ada
Caribou 11 Feb 1919 Bannock county
Cassia 20 Feb 1879 Owyhee
Clark 1 Feb 1919 Fremont
Clearwater 27 Feb 1911 Nez Perce
Custer 8 Jan 1881 Alturas and Lemhi
Elmore 7 Feb 1889 Alturas
Franklin 20 Jan 1913 Oneida
Fremont 4 Mar 1893 Bingham
Gem 15 Mar 1915 Boise and Canyon
Gooding 28 Jan 1913 Lincoln
Idaho 4 Feb 1864 Original county
Jefferson 18 Feb 1913 Fremont
Jerome 8 Feb 1919 Gooding & Lincoln
Kootenai 22 Dec 1864 Nez Perce
Lah-Toh (defunct) 1864-1867 Unknown N/A
Latah 14 May 1888 Nez Perce
Lemhi 9 Jan 1869 Idaho
Lewis 3 Mar 1911 Nez Perce
Lincoln 18 Mar 1895 Alturas & Blaine
Logan (defunct) 1889-1895 Alturas N/A
Madison 18 Feb 1913 Fremont
Minidoka 28 Jan 1913 Lincoln
Nez Perce 4 Feb 1864 Original county
Oneida 22 Jan 1864 Original county
Owyhee 31 Dec 1863 Original county
Payette 28 Feb 1917 Canyon
Power 30 Jan 1913 Bingham, Blaine & Oneida
Shoshone 4 Feb 1864 Original county
Teton 26 Jan 1915 Madison
Twin Falls 21 Feb 1907 Cassia
Valley 26 Feb 1917 Idaho & Boise
Washington 20 Feb 1879 Boise