Population By Race and Ethnicity in Suffolk County, NY in 2020

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2020, the 1,521,950 population of Suffolk County, New York comprised of 313,715 people who identified as Hispanic (20.61%), and 1,208,235 people who identified as Non-Hispanic (79.39%).

Race: The White Alone population was the largest racial group in Suffolk County, New York with a population of 1,273,498 (83.68%); Black or African American Alone population was the second largest racial group with a population of 138,287 (9.09%); and Asian Alone was the third largest racial group with a population of 67,098 (4.41%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Suffolk County, New York in 2020, with a population of 1,002,203 (65.85%); the second largest ethnic group was White Alone - Hispanic with a population of 271,295 (17.83%); and the third largest ethnic group was Black or African American Alone - Non Hispanic with a population of 116,142 (7.63%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Suffolk, New York.

You can find similar information for other New York counties, and for New York.

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Hispanics and Non Hispanics in Suffolk County, NY in 2020
Total Population:
Race in Suffolk County, NY in 2020
Total Population:
Ethnicity in Suffolk County, NY in 2020
Total Population:
Population By Race in Suffolk , NY in 2020
Race Population Percentage
Black or African American Alone 138,287 9.09%
White Alone 1,273,498 83.68%
American Indian and Alaska Native Alone 10,315 0.68%
Asian Alone 67,098 4.41%
Native Hawaiian And Pacific Islander Alone 1,649 0.11%
Two Or More Races 31,103 2.04%
Population By Ethnicity in Suffolk , NY in 2020
Ethnicity Population Percentage
Black or African American Alone - Hispanic 22,145 1.46%
White Alone - Hispanic 271,295 17.83%
American Indian and Alaska Native Alone - Hispanic 7,287 0.48%
Asian Alone - Hispanic 2,502 0.16%
Native Hawaiian And Pacific Islander Alone - Hispanic 1,259 0.08%
Two Or More Races - Hispanic 9,227 0.61%
Black or African American Alone - Non Hispanic 116,142 7.63%
White Alone - Non Hispanic 1,002,203 65.85%
American Indian and Alaska Native Alone - Non Hispanic 3,028 0.2%
Asian Alone - Non Hispanic 64,596 4.24%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 390 0.03%
Two Or More Races - Non Hispanic 21,876 1.44%