Population By Race and Ethnicity in New Castle, DE in 2020

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2020, the 570,918 population of New Castle County, Delaware comprised of 63,831 people who identified as Hispanic (11.18%), and 507,087 people who identified as Non-Hispanic (88.82%).

Race: The White Alone population was the largest racial group in New Castle County, Delaware with a population of 364,896 (63.91%); Black or African American Alone population was the second largest racial group with a population of 152,286 (26.67%); and Asian Alone was the third largest racial group with a population of 34,337 (6.01%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in New Castle County, Delaware in 2020, with a population of 315,013 (55.18%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 143,582 (25.15%); and the third largest ethnic group was White Alone - Hispanic with a population of 49,883 (8.74%).

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

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

See this for other years:
Hispanics and Non Hispanics in New Castle, DE in 2020
Total Population:
Race in New Castle, DE in 2020
Total Population:
Ethnicity in New Castle, DE in 2020
Total Population:
Population By Race in New Castle , DE in 2020
Race Population Percentage
Black or African American Alone 152,286 26.67%
White Alone 364,896 63.91%
American Indian and Alaska Native Alone 2,912 0.51%
Asian Alone 34,337 6.01%
Native Hawaiian And Pacific Islander Alone 428 0.08%
Two Or More Races 16,059 2.81%
Population By Ethnicity in New Castle , DE in 2020
Ethnicity Population Percentage
Black or African American Alone - Hispanic 8,704 1.53%
White Alone - Hispanic 49,883 8.74%
American Indian and Alaska Native Alone - Hispanic 1,866 0.33%
Asian Alone - Hispanic 530 0.09%
Native Hawaiian And Pacific Islander Alone - Hispanic 278 0.05%
Two Or More Races - Hispanic 2,570 0.45%
Black or African American Alone - Non Hispanic 143,582 25.15%
White Alone - Non Hispanic 315,013 55.18%
American Indian and Alaska Native Alone - Non Hispanic 1,046 0.18%
Asian Alone - Non Hispanic 33,807 5.92%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 150 0.03%
Two Or More Races - Non Hispanic 13,489 2.36%