Population By Race and Ethnicity in Middlesex, MA in 2020

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2020, the 1,628,235 population of Middlesex County, Massachusetts comprised of 143,185 people who identified as Hispanic (8.79%), and 1,485,050 people who identified as Non-Hispanic (91.21%).

Race: The White Alone population was the largest racial group in Middlesex County, Massachusetts with a population of 1,262,268 (77.52%); Asian Alone population was the second largest racial group with a population of 220,538 (13.55%); and Black or African American Alone was the third largest racial group with a population of 98,078 (6.02%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Middlesex County, Massachusetts in 2020, with a population of 1,143,415 (70.22%); the second largest ethnic group was Asian Alone - Non Hispanic with a population of 218,673 (13.43%); and the third largest ethnic group was White Alone - Hispanic with a population of 118,853 (7.3%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Middlesex, Massachusetts.

You can find similar information for other Massachusetts counties, and for Massachusetts.

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Hispanics and Non Hispanics in Middlesex, MA in 2020
Total Population:
Race in Middlesex, MA in 2020
Total Population:
Ethnicity in Middlesex, MA in 2020
Total Population:
Population By Race in Middlesex , MA in 2020
Race Population Percentage
Black or African American Alone 98,078 6.02%
White Alone 1,262,268 77.52%
American Indian and Alaska Native Alone 4,621 0.28%
Asian Alone 220,538 13.55%
Native Hawaiian And Pacific Islander Alone 1,077 0.07%
Two Or More Races 41,653 2.56%
Population By Ethnicity in Middlesex , MA in 2020
Ethnicity Population Percentage
Black or African American Alone - Hispanic 12,436 0.76%
White Alone - Hispanic 118,853 7.3%
American Indian and Alaska Native Alone - Hispanic 2,617 0.16%
Asian Alone - Hispanic 1,865 0.12%
Native Hawaiian And Pacific Islander Alone - Hispanic 627 0.04%
Two Or More Races - Hispanic 6,787 0.42%
Black or African American Alone - Non Hispanic 85,642 5.26%
White Alone - Non Hispanic 1,143,415 70.22%
American Indian and Alaska Native Alone - Non Hispanic 2,004 0.12%
Asian Alone - Non Hispanic 218,673 13.43%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 450 0.03%
Two Or More Races - Non Hispanic 34,866 2.14%