Highest Scotch-Irish population share, New Hampshire counties

New Hampshire counties ranked by the share of all residents who are Scotch-Irish ancestry (2024 American Community Survey). A concentration measure: Scotch-Irish residents as a percentage of total population. This list covers the 10 counties in New Hampshire that qualify, ranked against each other statewide. The median across all 10 is 1.2%. Biggest climber in the top 100 since 2020: Sullivan County, NH, up 5 places to #1.