GenealogyForum.com
Resource Center

Idaho

A Brief History of Idaho

The Political Divisions of Idaho
County	Date Formed	Parent Counties
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
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	Original county
Latah	14 May 188	Nez Perce
Lemhi	9 Jan 1869	Idaho
Lewis	3 Mar 1911	Nez Perce
Lincoln	18 Mar 1895	Alturas & Blaine
Logan (defunct)	1889-1895	Alturas
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

Online Sources for Genealogical Research in Idaho
GenealogyForum.com Idaho File Library

Addresses for Research in Idaho

Visit the GenealogyForum.com File Library

Return to GenealogyForum.com Resource Center

This page was last modified on .

Let me know what you think about this site, E-mail GoldenGateServices@aol.com.

GenealogyForum.comResource CenterIdaho