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

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 222.26K people in Maine with Irish ancestry (16.38% of Maine population). Among all Maine cities and places with a population of at least 10K, Augusta city had the highest percentage of its population with Irish ancestry (20.73%), followed by Saco city (19.98%), and Portland city (19.96%).

The chart and table below shows the top 10 cities with high percentage of its population having 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 Irish Ancestry in 2021
Augusta city
Saco city
Portland city
South Portland city
Orono CDP
Biddeford city
Brunswick CDP
Bangor city
Westbrook city
Auburn city
Ranking of Maine Cities and Places By Percentage of Population with Irish Ancestry in 2021
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Rank Ciy or Place Percentage of Pop. (%)
1 Augusta city 20.73
2 Saco city 19.98
3 Portland city 19.96
4 South Portland city 19.46
5 Orono CDP 18.41
6 Biddeford city 17.72
7 Brunswick CDP 17.67
8 Bangor city 17.07
9 Westbrook city 16.43
10 Auburn city 15.61
11 Sanford city 15.04
12 Waterville city 14.93
13 Lewiston city 12.48