New Castle County, Delaware Census 2020 Population By Race and Ethnicity

Updated on April 9, 2023.

According to the data from the US 2020 decennial Census, in April 2020, the 570.72K population of New Castle County, DE residents comprised of 63.52K residents who identified as Hispanic or Latino (11.13%), and 507.20K residents who identified as Non-Hispanic (88.87%).

Race: The White Alone population was the largest racial group in New Castle County, DE, with a population of 314.23K (55.06%). The Black or African American Alone population was the second largest racial group in New Castle County, DE, with a population of 146.54K (25.68%). The Two Or More Races population was the third largest racial group in New Castle County, DE, with a population of 43.70K (7.66%). The smallest racial group in New Castle County, DE was Native Hawaiian And Pacific Islander Alone with a population of 175 (0.03%).

Ethnicity: The Non-Hispanic - White Alone population was the largest ethnic group in New Castle County, DE, with a population of 303.27K (53.14%). The Non-Hispanic - Black Alone population was the second largest ethnic group in New Castle County, DE, with a population of 142.39K (24.95%). The Non-Hispanic - Asian Alone population was the third largest ethnic group in New Castle County, DE, with a population of 35.02K (6.14%). The smallest ethnic group in New Castle County, DE was Hispanic - Native Hawaiian & Pac. Islander with a population of 48 (0.01%).

The charts and tables below shows the population and percentage of each racial group and ethnicity group in New Castle County, Delaware from the 2020 decennial census.

You can see similar information for other Delaware counties and also for the state of Delaware.

New Castle County, DE Hispanics and Non Hispanics Population in Census 2020
Total Population:
New Castle County, DE Racial Groups in Census 2020
Total Population:
New Castle County, DE Ethnicity Groups in Census 2020
Total Population:
New Castle County, DE Population of Racial Groups in Census 2020
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Race Population % of County Population
Black or African American Alone 146544 25.68
White Alone 314231 55.06
American Indian and Alaska Native Alone 2156 0.38
Asian Alone 35200 6.17
Native Hawaiian And Pacific Islander Alone 175 0.03
Some Other Race Alone 28714 5.03
Two Or More Races 43699 7.66
New Castle County, DE Population of Ethnicity Groups in Census 2020
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Ethnicity Population % of County Population
Non-Hispanic - White Alone 303265 53.14
Non-Hispanic - Black Alone 142388 24.95
Non-Hispanic - Asian Alone 35022 6.14
Hispanic - Some Other Race Alone 26159 4.58
Non-Hispanic - Two or More Races 22953 4.02
Hispanic - Two or More Races 20746 3.64
Hispanic - White Alone 10966 1.92
Hispanic - Black Alone 4156 0.73
Non-Hispanic - Some Other Race Alone 2555 0.45
Hispanic - American Indian & Alaska Native 1263 0.22
Non-Hispanic - American Indian & Alaska Native 893 0.16
Hispanic - Asian Alone 178 0.03
Non-Hispanic - Native Hawaiian & Pac. Islander 127 0.02
Hispanic - Native Hawaiian & Pac. Islander 48 0.01