Ranking of Idaho Counties By Population with Irish Ancestry in 2021

Based on the US Census ACS-5Yrs estimates, in 2021, there were 165.57K people in Idaho with Irish ancestry. Among all Idaho counties, Ada County had the highest population with Irish ancestry (55.49K), followed by Kootenai County (19.79K), and Canyon County (17.70K).

The chart and table below shows the top 10 counties with high number of people with Irish ancestry.

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