Population By Race and Ethnicity in New Castle County, DE in 2011

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2011, the 542,031 population of New Castle County, Delaware comprised of 48,330 people who identified as Hispanic (8.92%), and 493,701 people who identified as Non-Hispanic (91.08%).

Race: The White Alone population was the largest racial group in New Castle County, Delaware with a population of 369,852 (68.23%); Black or African American Alone population was the second largest racial group with a population of 132,931 (24.53%); and Asian Alone was the third largest racial group with a population of 25,067 (4.63%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in New Castle County, Delaware in 2011, with a population of 330,965 (61.06%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 126,809 (23.4%); and the third largest ethnic group was White Alone - Hispanic with a population of 38,887 (7.17%).

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.

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Hispanics and Non Hispanics in New Castle County, DE in 2011
Total Population:
Race in New Castle County, DE in 2011
Total Population:
Ethnicity in New Castle County, DE in 2011
Total Population:
Population By Race in New Castle , DE in 2011
Race Population Percentage
Black or African American Alone 132,931 24.53%
White Alone 369,852 68.23%
American Indian and Alaska Native Alone 2,193 0.41%
Asian Alone 25,067 4.63%
Native Hawaiian And Pacific Islander Alone 301 0.06%
Two Or More Races 11,687 2.16%
Population By Ethnicity in New Castle , DE in 2011
Ethnicity Population Percentage
Black or African American Alone - Hispanic 6,122 1.13%
White Alone - Hispanic 38,887 7.17%
American Indian and Alaska Native Alone - Hispanic 1,198 0.22%
Asian Alone - Hispanic 327 0.06%
Native Hawaiian And Pacific Islander Alone - Hispanic 187 0.03%
Two Or More Races - Hispanic 1,609 0.3%
Black or African American Alone - Non Hispanic 126,809 23.4%
White Alone - Non Hispanic 330,965 61.06%
American Indian and Alaska Native Alone - Non Hispanic 995 0.18%
Asian Alone - Non Hispanic 24,740 4.56%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 114 0.02%
Two Or More Races - Non Hispanic 10,078 1.86%