RANKING · 2020 CENSUS · 10 SHOWN OF 10

Largest Scotch-Irish population, New Hampshire counties · 2020

New Hampshire counties ranked by the number of residents who are Scotch-Irish ancestry, from the 2020 American Community Survey detailed-origin tables. Each list covers the full eligible universe; download the complete data as CSV. This list covers the 10 counties in New Hampshire that qualify, ranked against each other statewide.

Scotch-Irish Americans: full group profile →

New HampshireAll states All rankings

SAME RANKING BYCities States Metros

RELATEDLargest American population Highest American population share Largest Arab population Highest Arab population share Largest Egyptian population Highest Egyptian population share

YEAR2010 2020 2024

RANKPLACESTATEPOPSCOTCH-IRISH POPULATIONVS 2010

01Rockingham County, NHNH324,0774,067−48%

02Hillsborough County, NHNH433,4153,619−62%

03Merrimack County, NHNH158,0781,955−55%

04Strafford County, NHNH135,0431,749−43%

05Grafton County, NHNH93,2251,336−41%

06Carroll County, NHNH52,784985−48%

07Belknap County, NHNH65,147706−51%

08Cheshire County, NHNH78,269682−72%

09Sullivan County, NHNH43,961565−48%

10Coos County, NHNH31,343424−34%

SHOWING 1–10 OF 10

Download CSV (full list, 10 rows)

UPDATED 2026-07-15 · DATA: US CENSUS BUREAU DECENNIAL CENSUS