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The Washington Territorial Legislature created Jefferson County on December 22, 1852. It was named in honor of President Thomas Jefferson.
There are 1,186 people listed on this census.
Database: 1877 Jefferson County Census. ONLINE. 2003. Washington Secretary of State. Transcribed by Elaine Wasil, Richland, Washington. Final Proofreading by Jan Crews, Ellensburg, Washington. Available Online: http://www.digitalarchives.wa.gov
Source: Washington Territory census rolls [microform] / as compiled by the county assessors. Olympia: Washington State Archives,  20 microfilm reels; 35 mm. http://cals.evergreen.edu/search~2/o41724881?For