Ranking of Maine Cities and Places By Percentage of Population with Scotch Irish Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 19.68K people in Maine with Scotch Irish ancestry (1.45% of Maine population). Among all Maine cities and places with a population of at least 10K, South Portland city had the highest percentage of its population with Scotch Irish ancestry (1.65%), followed by Auburn city (1.55%), and Portland city (1.47%).

The chart and table below shows the top 10 cities with high percentage of its population having Scotch Irish ancestry.

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

Data Source: US Census Bureau.
Ranking of Maine Cities and Places By Percentage of Population with Scotch Irish Ancestry in 2021
South Portland city
Auburn city
Portland city
Brunswick CDP
Bangor city
Westbrook city
Lewiston city
Waterville city
Augusta city
Orono CDP
Ranking of Maine Cities and Places By Percentage of Population with Scotch Irish Ancestry in 2021
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Rank Ciy or Place Percentage of Pop. (%)
1 South Portland city 1.65
2 Auburn city 1.55
3 Portland city 1.47
4 Brunswick CDP 1.30
5 Bangor city 1.19
6 Westbrook city 1.04
7 Lewiston city 0.92
8 Waterville city 0.91
9 Augusta city 0.85
10 Orono CDP 0.79
11 Saco city 0.78
11 Sanford city 0.78
12 Biddeford city 0.43