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FamilySearch Wiki - Jefferson County, Washington.

Free online genealogical research guide for Jefferson County, Washington.

Genealogy Inc. - Jefferson County, Washington Facts, Genealogy, Records & Links

Jefferson County Genealogical Resource Guide

From the Washington State Genealogical Society.

Jefferson County Genealogical Society - Indexes to JCGS Databases

Records of people who have lived in Jefferson County, Washington, begin in 1852 and come from a variety of sources. JCGS has cataloged and indexed more than 250,000 records related to Jefferson County. These indexes are FREE and EASY to use on the website.

Linkpendium - Jefferson County, Washington

NACo (National Association of Counties) - County Explorer

Official County Web Site

USGenWeb

USGenWeb Archives