1850--Oregon Territory census.
1860-1880--Washington Territory census.
1848--The Oregon Territory was created. It included what is now Oregon, Washington, Idaho, and parts of Montana and Wyoming.
1853--Washington Territory was created from the northern part of Oregon Territory.
1859--Oregon became a state. Washington Territory was enlarged to include the remaining Oregon territory not included in the new state.
1863--The Idaho Territory was created from lands in eastern Washington Territory.
1889--Washington became a state.
1860, 1870, 1880--Indexes in book and microfiche format are available.
1880, 1900, 1920, 1930--A soundex (phonetic) index is available on microfilm for part of the 1880 and all of the 1900, 1920 and 1930 censuses.
1910--The Family History Library has a street index for Seattle. (FHL fiche 6331481)
1850-1880--Mortality schedules exist for Washington (as part of Oregon Territory), censuses. The mortality schedules for 1860 to 1880 are available at the DAR library in Washington D.C. and at the Washington State Library. The Family History Library has copies of the 1860, 1870, and 1880 mortality schedules.
State censuses also exist for a few counties of Washington for various years. These generally include heads of households only. These partial censuses are available at the Washington State Library and the Family History Library (beginning with Family History Library film 1841781). The years included:
- 1854, 1857, 1861, 1871, 1875, 1877-1879, 1881, 1883, 1885, 1887, 1890-1892, 1907.
Territorial censuses exist for Washington.
1850--Part of Oregon Territory
Heritage Quest Online: http://www.heritagequestonline.com
Census Online: http://www.census-online.com/links/WA/
Genealogy Today: http://dir.genealogytoday.com/usa/wa/census.html
Access Genealogy: http://www.accessgenealogy.com/census/washington.htm
Mortality Schedules: http://mortalityschedules.com/
Washington Research Outline. Salt Lake City, Utah: Intellectual Reserve, Inc., Family History Department, 1998, 2001.