Ranking of Massachusetts Counties By Percentage of Population with Other Groups Ancestry in 2021

Updated on April 16, 2025.

Based on the US Census ACS-5Yrs estimates, in 2021, there were 1.65M people in Massachusetts with Other Groups ancestry (23.58% of Massachusetts population). Among all Massachusetts counties, Suffolk County had the highest percentage of its population with Other Groups ancestry (39.24%), followed by Hampden County (32.49%), and Essex County (27.57%).

The chart and table below shows the top 10 counties with high percentage of its population having Other Groups ancestry.

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

Data Source: US Census Bureau.
Ranking of Massachusetts Counties By Percentage of Population with Other Groups Ancestry in 2021
Suffolk County
Hampden County
Essex County
Middlesex County
Norfolk County
Worcester County
Berkshire County
Nantucket County
Hampshire County
Bristol County
Ranking of Massachusetts Counties By Percentage of Population with Other Groups Ancestry in 2021
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Rank County Percentage of Pop. (%)
1 Suffolk County 39.24
2 Hampden County 32.49
3 Essex County 27.57
4 Middlesex County 24.74
5 Norfolk County 22.27
6 Worcester County 20.12
7 Berkshire County 16.56
8 Nantucket County 15.53
9 Hampshire County 15.09
10 Bristol County 14.67
11 Franklin County 12.72
12 Plymouth County 11.64
13 Barnstable County 10.91
14 Dukes County 10.47