Population By Race and Ethnicity in Middlesex, CT in 2019

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2019, the 162,538 population of Middlesex County, Connecticut comprised of 10,735 people who identified as Hispanic (6.61%), and 151,803 people who identified as Non-Hispanic (93.4%).

Race: The White Alone population was the largest racial group in Middlesex County, Connecticut with a population of 143,955 (88.57%); Black or African American Alone population was the second largest racial group with a population of 9,184 (5.65%); and Asian Alone was the third largest racial group with a population of 5,393 (3.32%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Middlesex County, Connecticut in 2019, with a population of 135,265 (83.22%); the second largest ethnic group was White Alone - Hispanic with a population of 8,690 (5.35%); and the third largest ethnic group was Black or African American Alone - Non Hispanic with a population of 7,987 (4.91%).

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

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

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Hispanics and Non Hispanics in Middlesex, CT in 2019
Total Population:
Race in Middlesex, CT in 2019
Total Population:
Ethnicity in Middlesex, CT in 2019
Total Population:
Population By Race in Middlesex , CT in 2019
Race Population Percentage
Black or African American Alone 9,184 5.65%
White Alone 143,955 88.57%
American Indian and Alaska Native Alone 468 0.29%
Asian Alone 5,393 3.32%
Native Hawaiian And Pacific Islander Alone 118 0.07%
Two Or More Races 3,420 2.1%
Population By Ethnicity in Middlesex , CT in 2019
Ethnicity Population Percentage
Black or African American Alone - Hispanic 1,197 0.74%
White Alone - Hispanic 8,690 5.35%
American Indian and Alaska Native Alone - Hispanic 199 0.12%
Asian Alone - Hispanic 119 0.07%
Native Hawaiian And Pacific Islander Alone - Hispanic 54 0.03%
Two Or More Races - Hispanic 476 0.29%
Black or African American Alone - Non Hispanic 7,987 4.91%
White Alone - Non Hispanic 135,265 83.22%
American Indian and Alaska Native Alone - Non Hispanic 269 0.17%
Asian Alone - Non Hispanic 5,274 3.25%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 64 0.04%
Two Or More Races - Non Hispanic 2,944 1.81%