Genealogy Today | Directory Idaho County U.S. Census (1870 - 1930) Directory > Census Records > U.S.A. > Idaho U.S. Federal Census records are divided into groups by state, then county, and in many cases by township as well.  1870 Census ADD NEW LISTING  1870 Census - Idaho - Idaho County  from Ancestry.com Information about the 1870 Census  1880 Census ADD NEW LISTING  1880 Idaho County Census [ Broken Link? ] 1880 Census - Idaho - Idaho County  from Ancestry.com Information about the 1880 Census  1900 Census ADD NEW LISTING  Population4: 9,121 1900 Census - Idaho - Idaho County  from Ancestry.com Information about the 1900 Census  1910 Census ADD NEW LISTING  Population4: 12,384 1910 Census - Idaho - Idaho County  from Ancestry.com Information about the 1910 Census  1920 Census ADD NEW LISTING  Population4: 11,749 1920 Census - Idaho - Idaho County  from Ancestry.com Information about the 1920 Census  1930 Census ADD NEW LISTING  Population4: 10,107 USGenWeb5: 1930 Census Images - Idaho 1930 Census - Idaho - Idaho County  from Ancestry.com Information about the 1930 Census  Additional Information Idaho

⁴ Population of Counties by Decennial Census: 1900 to 1990, U.S. Bureau of the Census, 1995

⁵ The USGenWeb Census Project, USGenWeb Archives, 2004.