Idaho Census

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United States  >  U.S. Census  >  Idaho  >  Idaho_Census


Idaho: Existing and Lost Federal Census Schedules[1][2][3]
Exact Date Population Schedules Veterans/ Pensioners Slave Owners Mortality Agricultural Industrial/ Manufact- urers Defective Indian[4]
1940 Apr 1 Public release in 2012 - - - - - - -
1930 Apr 1 Exist - - - - - - -
1920 Jan 1 Exist - - - - - - -
1910 Apr 15 Exist - - - - - - Exist
1900 Jun 1 Exist - - - - - - Exist
1890 Jun 2 Lost Lost - - - - - -
1880 Jun 1 Exist - - Exist Exist Exist Exist -
1870 Jun 1 Exist - - Exist Exist Exist - -
1860 Jun 1 Partially included with Utah Territory  - Lost  Lost  Lost  - -
1850 Jun 1 Partially included with Oregon Territory - Exist Exist Exist - -

Sources and Notes

  1. Anne Bruner Eales, and Robert M Kvasnicka, ed., Guide to Genealogical Research in the National Archives of the United States, 3d ed. (Washington, D.C.: NARA, 2000), 32.
  2. William Thorndale, and William Dollarhide, Map Guide to the U.S. Federal Censuses, 1790-1920 (Baltimore: Genealogical Publishing, 1987), 93-98.
  3. William Dollarhide, The Census Book: A Genealogists Guide to Federal Census Facts, Schedules and Indexes (Bountiful, Utah: Heritage Quest, 1999), 107.
  4. Only for Indian schedules taken along with Federal population schedules.

United States Censuses 1870-1920—Free Internet census indexes and images to the 1870, 1880 (index only), 1900, and 1920 (partial index only) can be viewed on the FamilySearch Record Search. These indexes show every name listed on the census, and except for 1880 and 1920, are also linked to census images including information about each person’s residence, age, birthplace, occupation, other family members, and neighbors.

The Family History Library has microfilm copies of the U.S. federal censuses for the state of Idaho for 1900, 1910, 1920, and 1930.

The 1890 federal census was destroyed. However, the State of Idaho is attempting to reconstruct the 1890 census by indexing a variety of records, 1885-1894, for the counties in existence for those years. This is a work in progress and is being done by staff, interns, and volunteers of the Idaho State Historical Society Public Archives and Research Library in Boise. As counties are indexed, they are added to the statewide index, which is available online.

Historical Background

Idaho became a United States territory in 1863 and its first territorial census was taken in 1870. It was admited into the Union in 1890 as the 43rd state. Censuses 1870 to 2000 are extant. The 1940 - 2000 federal censuses are not yet released to the public.


United States Census Indexes 1870-1920—Free Internet census indexes to the 1870, 1880, 1900, and 1920 (partial index only) can be viewed on the FamilySearch Record Search.

Statewide indexes are available for the 1870 and 1880 censuses in book and microfiche format. A Soundex (phonetic) index is available on microfilm for part of the 1880 census. The censuses and indexes are at the Family History Library.

Special Censuses

Mortality Schedules

1870-1880--Mortality schedules exist for the 1870 and 1880 censuses. The Family History Library has the schedules and indexes.

Mortality Schedules 1850-1880

 The 1870 and 1880 non-population schedules for Idaho are also online on the Idaho Historical Society's web site, in an alphabetical listing.

State Censuses

Idaho did not take any state censuses. However, the 1856 Utah territorial census included residents in "Malad County" and Cache County who may have actually lived on  the extreme south edge of Idaho.

Territorial Censuses

The area that is presently Idaho was included in the federal censuses of the Oregon Territory (1850), Washington Territory (1860), and Idaho Territory (1870 and 1880). For the 1860 census of Idaho County, see Spokane County, Washington. Parts of southern Idaho were also included in the 1860 and 1870 censuses of Cache County, Utah.

Web Sites

FamilySearch Record Search has free census indexes and images for 1870, and 1900; but indexes only for 1880, and 1920.


Heritage Quest Online:

Census Online:

Genealogy Today:

Access Genealogy:

Mortality Schedules:


Idaho Research Outline. Salt Lake City, Utah: Intellectual Reserve, Inc., Family History Department, 1998, 2006.