Question

Where did large numbers of Scotch-Irish immigrants settle?

Answer 1

See below

Explanation:

Initially, a large number of Scotch-Irish people settled in the southern states (coming from Ulster, Ireland), as shown in the map below (some 200,000 people by the way).

Nowadays, according to the American Fact Finder, there are some 1,351,426 people with Scotch-Irish heritage in 2016. (https://factfinder.census.gov/faces/tableservices/jsf/pages/productview.xhtml?pid=ACS_16_5YR_B04004&prodType=table)

(States with the most amount)
Texas – 287,393 (1.1%)
North Carolina – 274,149 (2.9%)
California – 247,530 (0.7%)
Florida – 170,880 (0.9%)
Pennsylvania – 163,836 (1.3%)
Tennessee – 153,073 (2.4%)
Virginia – 140,769 (1.8%)
Georgia – 124,186 (1.3%)
Ohio – 123,572 (1.1%)
South Carolina – 113,008 (2.4%)

(States with biggest percentage)
North Carolina (2.9%)
South Carolina, Tennessee (2.4%)
West Virginia (2.1%)
Montana, Virginia (1.8%)
Maine (1.7%)
Alabama, Mississippi (1.6%)
Kentucky, Oregon, Wyoming (1.5%)