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1850 Federal Census Transcribed by Districts and indexed alphabetically Indexed and original census images viewable on FamilySearch.org
1852 Iowa State Census Transcribed Union and Washington Townships and arranged alphabetically
1853 Iowa State Census Transcribed and Indexed in alphabetical order
1860 Federal Census Transcribed by Townships and indexed alphabetically and original census images viewable on FamilySearch.org
1870 Federal Census Transcribed by Township and indexed alphabetically and original census images viewable on FamilySearch.org
1880 Federal Census Indexed and original census images viewable on FamilySearch.org and Ancestry.com
1885 Iowa Census Indexed on this Web site Indexed and original census images viewable on FamilySearch.org
1895 Iowa Census Indexed on the Warren County Genealogical Society Website Indexed and original census images viewable on FamilySearch.org
1900 Federal Census Indexed and original census images viewable on FamilySearch.org
1905 Iowa State Census Index to 1905 Census Directory on this Web site Indexed and original census card images viewable on FamilySearch.org
Warren County, IA, Population Totals
1850 = 961 1860 = 10,281 1870 = 17,980 1880 = 19,578 1900 = 20,376 1910 = 18,194 1920 = 18,047 1930 = 17,700
1940 = 17,695 1950 = 17,758 1960 = 20,829 1970 = 27,432 1980 = 34,878 1990 = 36,033 2000 = 40,671 2010 = 46,225 2020 = 52,403
1910 Federal Census Indexed and original census images viewable on FamilySearch.org 1915 Iowa State Census Indexed and original census card images viewable on FamilySearch.org 1920 Federal Census Indexed and original census images viewable on FamilySearch.org 1925 Iowa State Census Indexed on this Web site Indexed and original census images viewable on FamilySearch.org 1930 Federal Census Indexed and original census images viewable on FamilySearch.org 1940 Federal Census Indexed and original census images viewable on FamilySearch.org 1950 Federal Census Indexed and original census images viewable on FamilySearch.org
1910 Federal Census Indexed and original census images viewable on FamilySearch.org
1915 Iowa State Census Indexed and original census card images viewable on FamilySearch.org
1920 Federal Census Indexed and original census images viewable on FamilySearch.org
1925 Iowa State Census Indexed on this Web site Indexed and original census images viewable on FamilySearch.org
1930 Federal Census Indexed and original census images viewable on FamilySearch.org
1940 Federal Census Indexed and original census images viewable on FamilySearch.org
1950 Federal Census Indexed and original census images viewable on FamilySearch.org
