Jefferson County, Oregon Census

Jefferson County, Oregon was formed from Crook County in 1914.

1920 Jefferson County, Oregon Census

• Free 1920 Census Form for your Research
• Free 1920 Census Images and Index (partial)
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  • 1920 Jefferson County, Census (images and index) $
• Hosted at Census Guide
  • 1920 U.S. Census Guide

1930 Jefferson County, Oregon Census

• Free 1930 Census Form for your Research
• Hosted at Ancestry.com – Ancestry Free Trial
  • 1930 Jefferson County, Census (images and index) $
• Hosted at Census Guide
  • 1930 U.S. Census Guide