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.

Data Source: US Census Bureau (Vintage).

See this for other years:

Hispanics and Non Hispanics in New Castle County, DE in 2010

Total Population:538,792

Non Hispanic (91.24%)

Hispanic (8.76%)

Race in New Castle County, DE in 2010

Total Population:538,792

White Alone (68.67%)

Black or African American Alone (24.35%)

Asian Alone (4.46%)

Two or more races (2.07%)

American Indian and Alaska Native Alone (0.4%)

Native Hawaiian And Pacific Islander Alone (0.05%)

Ethnicity in New Castle County, DE in 2010

Total Population:538,792

Non-Hispanic White Alone (61.61%)

Non-Hispanic Black or African American Alone (23.23%)

Hispanic White Alone (7.05%)

Non-Hispanic Asian Alone (4.39%)

All Other Ethnicities (1.92%)

Non-Hispanic Two or more races (1.79%)

Population By Race in New Castle , DE in 2010

Race	Population	Percentage
White Alone	369,964	68.67%
Black or African American Alone	131,183	24.35%
Asian Alone	24,011	4.46%
Two Or More Races	11,177	2.07%
American Indian and Alaska Native Alone	2,176	0.4%
Native Hawaiian And Pacific Islander Alone	281	0.05%

Population By Ethnicity in New Castle , DE in 2010

Ethnicity	Population	Percentage
White Alone - Non Hispanic	331,964	61.61%
Black or African American Alone - Non Hispanic	125,184	23.23%
White Alone - Hispanic	38,000	7.05%
Asian Alone - Non Hispanic	23,679	4.39%
Two Or More Races - Non Hispanic	9,648	1.79%
Black or African American Alone - Hispanic	5,999	1.11%
Two Or More Races - Hispanic	1,529	0.28%
American Indian and Alaska Native Alone - Hispanic	1,180	0.22%
American Indian and Alaska Native Alone - Non Hispanic	996	0.19%
Asian Alone - Hispanic	332	0.06%
Native Hawaiian And Pacific Islander Alone - Hispanic	169	0.03%
Native Hawaiian And Pacific Islander Alone - Non Hispanic	112	0.02%