County profile

New Castle County

Delaware · ACS 2020–2024

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Latest estimates

At a glance

U.S. Census Bureau American Community Survey 5-year estimates.

Total population
577,961
Median household income
$91,166
People below poverty
10.1%
Median home value
$352,200

Income

The median income of households in New Castle County, Delaware was $91,166. An estimated 4.5% of households had income below $10,000 a year and 15% had income of $200,000 or more.

Household Income in New Castle County, Delaware in 2020-2024

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Percent
Less than $10,000 4.5
$10,000 to $14,999 2.2
$15,000 to $24,999 4.9
$25,000 to $34,999 5.4
$35,000 to $49,999 9.5
$50,000 to $74,999 15
$75,000 to $99,999 13
$100,000 to $149,999 19.2
$150,000 to $199,999 11.4
$200,000 or more 15

Median Earnings for Full-Time Year-Round Workers by Sex in New Castle County, Delaware in 2020-2024

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Dollars
Male 73366
Female 61749

An estimated 79.1% of households received earnings. An estimated 31.2% of households received Social Security and an estimated 27.6 % of households received retirement income other than Social Security. The average income from Social Security was $26,778. These income sources are not mutually exclusive; that is, some households received income from more than one source.

Proportion of Households with Various Income Sources in New Castle County, Delaware in 2020-2024

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Percent
Earnings 79.1
Social Security 31.2
Retirement income 27.6
Supplemental Security Income (SSI) 4.6
Cash public assistance income 2.2

Poverty and Participation in Government Programs

In 2020-2024, 10.1 % of people were in poverty. An estimated 13.7% of children under 18 were below the poverty level, compared with 7.8% of people 65 years old and over. An estimated 9.6% of people 18 to 64 years were below the poverty level.

Poverty Rates in New Castle County, Delaware in 2020-2024

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Percent
People in poverty 10.1
Children under 18 years below poverty 13.7
People 65 years old and over below poverty 7.8
People 18 to 64 years below poverty 9.6

In 2020-2024, 9.8 % of households received SNAP (the Supplemental Nutrition Assistance Program). An estimated 51.2% of households that received SNAP had children under 18, and 40.8% of households that received SNAP had one or more people 60 years and over. An estimated 42% of all households receiving SNAP were families with a female householder and no spouse present.


Among the civilian noninstitutionalized population in New Castle County, Delaware in 2020-2024, 94.1% had health insurance coverage and 5.9% did not have health insurance coverage. Private coverage was 73.2% and public coverage was 34.8%, respectively. The percentage of children under the age of 19 with no health insurance coverage was 3.5%.


In 2020-2024, New Castle County, Delaware had a total population of 577,961 - 297,537 (51.5%) females and 280,424 (48.5%) males. The median age was 39.3 years. An estimated 21.2% of the population was under 18 years, 33.3% was 19 to 44 years, 25.5% was 45 to 64 years, and 17.1 % was 65 years and older.

Population by Age and Sex for New Castle County, Delaware in 2020-2024

Male Female
Under 5 15998 15545
5 to 9 16206 16136
10 to 14 18802 17883
15 to 19 19349 19589
20 to 24 17935 17639
25 to 29 18725 18801
30 to 34 20898 21612
35 to 39 19742 19069
40 to 44 18196 19718
45 to 49 16253 17203
50 to 54 17736 19182
55 to 59 18790 18247
60 to 64 18187 21962
65 to 69 15459 18081
70 to 74 11654 13611
75 to 79 7365 9856
80 to 84 5097 6385
85 and over 4032 7018

Hispanic Origin and Race

For people reporting one race alone, 54.2% were White; 25.6% were Black or African American; 4.8% were American Indian and Alaska Native; 6.2% were Asian; 10.9% were Native Hawaiian and Other Pacific Islander, and 0% were Some Other Race. An estimated 8.5% reported Two or More Races. An estimated 11.8% of the people in New Castle County, Delaware were Hispanic or Latino. An estimated 52.3% of the people in New Castle County, Delaware were White alone, non-Hispanic. People of Hispanic origin may be of any race.


Households and Families

In 2020-2024, there were 224,173 households in New Castle County, Delaware. The average household size was 2.51 people.

Married-couple households made up 44.3% of the households in New Castle County, Delaware while cohabiting couple households made up 7.2% of households. Female householders with no spouse or partner present were 30.8% of all households, while 17.8% of households had male householders with no spouse or partner present. Some households had one person, as 12.3% of households were male householders living alone, and 17.3% were female householders living alone, for a total of 29.6% of all households.

In New Castle County, Delaware, 28.8% of all households had one or more people under the age of 18; 31.3% of all households had one or more people 65 years and over.

Types of Households in New Castle County, Delaware in 2020-2024

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Percent
Married-couple households 44.3
Cohabiting Couples 7.2
Male Householder
No spouse/partner present
17.8
Female Householder
No spouse/partner present
30.8

Marital Status

Among persons 15 and older, 47.9% of males and 42.3% of females were currently married.

Population 15 years and over Percent
Males
Percent
Females
Never married 39.4 36
Now married, except separated 47.9 42.3
Separated 1.1 1.6
Widowed 2.9 8
Divorced 8.7 12.1

Grandparents and Grandchildren

In New Castle County, Delaware, 12,899 grandparents lived with their grandchildren under 18 years old. Of those grandparents, 30.7% were responsible for the basic needs of their grandchildren.


Nativity and Foreign-Born

In 2020-2024, an estimated 87.2% of the people living in New Castle County, Delaware were U.S. natives. 44.3% of the New Castle County, Delaware population were living in the state where they were born.

Approximately 12.8% of New Castle County, Delaware residents in 2020-2024 were foreign-born. 55.3% of foreign-born were naturalized U.S. citizens and an estimated 62 % entered the country before the year 2010.

Foreign-born residents of New Castle County, Delaware come from different parts of the world. The bar graph below displays the percentage of foreign-born from each world region of birth in 2020-2024 for New Castle County, Delaware.

Region of Birth for the Foreign-Born Population in New Castle County, Delaware in 2020-2024

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Percent
Latin America 37.9
Asia 36.1
Europe 8.4
Africa 16.4
Northern America 1
Oceania 0.1

Language

Among people at least five years old living in New Castle County, Delaware in 2020-2024, 17.3 % spoke a language other than English at home. Spanish was spoken by 8.3% of people at least five years old; 6% reported that they did not speak English "very well."

Percentage of the Population 5 years and over who Speak a Language other than English in New Castle County, Delaware in 2020-2024

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Percent
Spanish 8.3
Other Indo-European languages 3.9
Asian and Pacific Islander languages 3.1
Other languages 2

Geographic Mobility

In 2020-2024, 88.9 % of the people at least one year old living in New Castle County, Delaware were living in the same house one year earlier.

Geographic Mobility of Residents of New Castle County, Delaware in 2020-2024

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Percent
Same house 88.9
Different house, same county 5.9
Different county, same state 0.8
Different state 3.8
Abroad 0.6

Education

In 2020-2024, 92.6 % of people 25 years and over had at least graduated from high school and 39.7% had a bachelor's degree or higher. An estimated 7.4% did not complete high school.

The total school enrollment in New Castle County, Delaware was 140,648 in 2020-2024. Nursery school enrollment was 8,834 and kindergarten through 12th grade enrollment was 89,205. College or graduate school enrollment was 42,609.

Educational Attainment of People in New Castle County, Delaware in 2020-2024

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Percent
Less than high school diploma 7.4
High school diploma or equivalency 26.7
Some college, no degree 18.4
Associate's degree 7.8
Bachelor's degree 22.5
Graduate or professional degree 17.2

Disability

In New Castle County, Delaware, among the civilian noninstitutionalized population in 2020-2024, 12.9 % reported a disability. The likelihood of having a disability varied by age - from 5.4% of people under 18 years old, to 10.6% of people 18 to 64 years old, and to 31.2% of those 65 and over.


Employment Status and Type of Employer

In New Castle County, Delaware, 62.3 % of the population 16 and over were employed; 34.3% were not currently in the labor force.

An estimated 81.7% of the people employed were private wage and salary workers; 14.2% were federal, state, or local government workers; and 3.9 % were self-employed in their own (not incorporated) business.

Class of worker Number Percent
Private wage and salary workers 239,366 81.7
Federal, state, or local government workers 41,470 14.2
Self-employed workers in own not incorporated business 11,462 3.9

Industries

In 2020-2024, the civilian employed population 16 years and older in New Castle County, Delaware worked in the following industries:

Percent by Industry in New Castle County, Delaware in 2020-2024

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Percent
Agriculture, forestry, fishing and hunting, and mining 0.5
Construction 5.9
Manufacturing 7.1
Wholesale trade 1.7
Retail trade 10.8
Transportation and warehousing, and utilities 6.6
Information 1.1
Finance and insurance, and real estate and rental and leasing 11.6
Professional, scientific, and management, and administrative and waste management services 12.4
Educational services, and health care and social assistance 26.2
Arts, entertainment, and recreation, and accommodation, and food services 7.7
Other Services, except public administration 3.8
Public administration 4.7

Occupations

Occupations for the Civilian Employed Population 16 Years and over in New Castle County, Delaware in 2020-2024

Civilian employed population 16 years and over Number Percent
Management, business, sciences, and arts occupations 138,561 47.3
Service occupations 46,718 15.9
Sales and office occupations 54,925 18.7
Natural resources, construction, and maintenance occupations 21,177 7.2
Production, transportation, and material moving occupations 31,662 10.8

Commuting to Work

An estimated 68.6% of New Castle County, Delaware workers drove to work alone in 2020-2024, and 7.3% carpooled. Among those who commuted to work, it took them on average 25.3 minutes to get to work.

Percent of Workers 16 and over Commuting by Mode in New Castle County, Delaware in 2020-2024

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Percent
Car, truck, van -- drove alone 68.6
Car, truck, van -- carpooled 7.3
Public transportation (excluding taxicab) 2.6
Walked 2.2
Other means 1.8
Worked from home 17.6

In 2020-2024, New Castle County, Delaware had a total of 236,079 housing units. Of these housing units, 74.3% were single-family houses either not attached to any other structure or attached to one or more structures (commonly referred to as "townhouses" or "row houses"). 23.5% of the housing units were located in multi-unit structures, or those buildings that contained two or more apartments. 2% were mobile homes, while any remaining housing units were classified as "other," which included boats, recreational vehicles, vans, etc.

Types of Housing Units in New Castle County, Delaware in 2020-2024

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Percent
Single-family houses 74.3
Apartments in multi-unit structures 23.5
Mobile homes 2
Boat, RV, van, etc 0.1

8.8% of the housing inventory was comprised of houses built since 2010, while 10.8% of the houses were first built in 1939 or earlier. The median number of rooms in all housing units in New Castle County, Delaware was 6.2 rooms, and of these housing units 67.7% had three or more bedrooms.


In 2020-2024, New Castle County, Delaware had 224,173 housing units that were occupied or had people living in them, while the remaining 11,906 were vacant. Of the occupied housing units, the percentage of these houses occupied by owners (also known as the homeownership rate) was 69% while renters occupied 31%. The average household size of owner-occupied houses was 2.62 and in renter-occupied houses it was 2.25.

3.8% of householders of these occupied houses had moved into their house since 2021, while 10.5% moved into their house in 1989 or earlier. Households without a vehicle available for personal use comprised 7.5% and another 20% had three or more vehicles available for use.

The following chart provides the primary fuel used to heat houses in New Castle County, Delaware:

House Heating Fuel Used in New Castle County, Delaware in 2020-2024

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Percent
Gas 57.1
Electricity 32.2
Fuel oil, kerosene, etc 9.4
All other fuels 0.8
No fuel used 0.5

In 2020-2024, the median property value for owner-occupied houses in New Castle County, Delaware was $352,200.

Of the owner-occupied households, 67.2 % had a mortgage. 32.8% owned their houses "free and clear," that is without a primary mortgage or loan on the house. The median monthly housing costs for owners with a mortgage was $1,882 and for owners without a mortgage it was $616.

For renter-occupied houses, the median gross rent for New Castle County, Delaware was $1,448. Gross rent includes the monthly contract rent and any monthly payments made for electricity, gas, water and sewer, and any other fuels to heat the house.