Statehood: 3 July 1890
43rd state of the United States
South: Nevada, Utah
East: Montana, Wyoming
West: Oregon, Washington
Capital and largest city: Boise
Map: Idaho, 1896.
(click map to enlarge)
Library of Congress, Geography and Map Division
Original counties as listed in the 1889 Idaho Constitution, Article 19, Sect. 1: Ada, Alturas, Bear Lake, Bingham, Boise, Cassia, Custer, Elmore, Idaho, Kootenai, Latah, Logan, Nez Perce, Oneida, Owyhee, Shoshone, Washington. Idaho County Creation Dates and Parent Counties. Counties in 2020: 44.
Institutions, Societies, and Government Websites
Idaho Government Documents, Idaho Commission of Libraries
Idaho Maps, Library of Congress
Interactive Map of Idaho County Formation History, Maps of U.S.
Idaho Manuscripts, Archive Grid
Idaho Manuscripts, Library of Congress
State of Idaho
The History of Idaho, John Hailey, 1910.
Small Town Newspapers
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