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

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 303.88K people in Maine with Unclassified ancestry (22.39% of Maine population). Among all Maine cities and places with a population of at least 10K, Westbrook city had the highest percentage of its population with Unclassified ancestry (31.10%), followed by Sanford city (26.35%), and Bangor city (24.14%).

The chart and table below shows the top 10 cities with high percentage of its population having Unclassified 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 Unclassified Ancestry in 2021
Westbrook city
Sanford city
Bangor city
Orono CDP
Waterville city
South Portland city
Biddeford city
Brunswick CDP
Augusta city
Portland city
Ranking of Maine Cities and Places By Percentage of Population with Unclassified Ancestry in 2021
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Rank Ciy or Place Percentage of Pop. (%)
1 Westbrook city 31.10
2 Sanford city 26.35
3 Bangor city 24.14
4 Orono CDP 22.89
5 Waterville city 21.72
6 South Portland city 20.53
7 Biddeford city 20.48
8 Brunswick CDP 20.33
9 Augusta city 17.44
10 Portland city 17.12
11 Lewiston city 16.61
12 Saco city 15.56
13 Auburn city 13.18