Ranking of Washington Counties By Percentage of Population with Welsh Ancestry in 2021

Based on the US Census ACS-5Yrs estimates, in 2021, there were 68.14K people in Washington with Welsh ancestry (0.90% of Washington population). Among all Washington counties, Wahkiakum County had the highest percentage of its population with Welsh ancestry (3.38%), followed by Klickitat County (1.86%), and Kittitas County (1.79%).

The chart and table below shows the top 10 counties with high percentage of its population having Welsh ancestry.

You can see similar information for other states and for other ancestry groups in Washington.