Ranking of Idaho Counties By Percentage of Population with Scottish Ancestry in 2021

Based on the US Census ACS-5Yrs estimates, in 2021, there were 57.04K people in Idaho with Scottish ancestry (3.15% of Idaho population). Among all Idaho counties, Madison County had the highest percentage of its population with Scottish ancestry (5.41%), followed by Boise County (5.23%), and Custer County (5.22%).

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

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