Ranking of Connecticut Counties By Population with Scotch Irish Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 17.28K people in Connecticut with Scotch Irish ancestry. Among all Connecticut counties, Fairfield County had the highest population with Scotch Irish ancestry (4.90K), followed by Hartford County (3.42K), and New Haven County (2.94K).

The chart and table below shows the top 8 counties with high number of people with Scotch Irish ancestry.

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

Data Source: US Census Bureau.
Ranking of Connecticut Counties By Population with Scotch Irish Ancestry in 2021
Fairfield County
Hartford County
New Haven County
New London County
Middlesex County
Litchfield County
Windham County
Tolland County
Ranking of Connecticut Counties By Population with Scotch Irish Ancestry in 2021
0 of 0
Rank County Population
1 Fairfield County 4898
2 Hartford County 3416
3 New Haven County 2942
4 New London County 2223
5 Middlesex County 1330
6 Litchfield County 978
7 Windham County 752
8 Tolland County 743