Population By Race and Ethnicity in New Castle County, DE in 2010

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2010, the 538,792 population of New Castle County, Delaware comprised of 47,209 people who identified as Hispanic (8.76%), and 491,583 people who identified as Non-Hispanic (91.24%).

Race: The White Alone population was the largest racial group in New Castle County, Delaware with a population of 369,964 (68.67%); Black or African American Alone population was the second largest racial group with a population of 131,183 (24.35%); and Asian Alone was the third largest racial group with a population of 24,011 (4.46%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in New Castle County, Delaware in 2010, with a population of 331,964 (61.61%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 125,184 (23.23%); and the third largest ethnic group was White Alone - Hispanic with a population of 38,000 (7.05%).

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 2010
Total Population:
Race in New Castle County, DE in 2010
Total Population:
Ethnicity in New Castle County, DE in 2010
Total Population:
Population By Race in New Castle , DE in 2010
Race Population Percentage
Black or African American Alone 131,183 24.35%
White Alone 369,964 68.67%
American Indian and Alaska Native Alone 2,176 0.4%
Asian Alone 24,011 4.46%
Native Hawaiian And Pacific Islander Alone 281 0.05%
Two Or More Races 11,177 2.07%
Population By Ethnicity in New Castle , DE in 2010
Ethnicity Population Percentage
Black or African American Alone - Hispanic 5,999 1.11%
White Alone - Hispanic 38,000 7.05%
American Indian and Alaska Native Alone - Hispanic 1,180 0.22%
Asian Alone - Hispanic 332 0.06%
Native Hawaiian And Pacific Islander Alone - Hispanic 169 0.03%
Two Or More Races - Hispanic 1,529 0.28%
Black or African American Alone - Non Hispanic 125,184 23.23%
White Alone - Non Hispanic 331,964 61.61%
American Indian and Alaska Native Alone - Non Hispanic 996 0.19%
Asian Alone - Non Hispanic 23,679 4.39%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 112 0.02%
Two Or More Races - Non Hispanic 9,648 1.79%