New Castle County, Delaware

26 cities & places have their primary county here.

Population: 573,030
Median household income: $89,901
Median home value: $329,800

Home to 573,030 residents, New Castle County is one of Delaware's counties. 26 cities and places have their primary county here. At $89,901, its median household income sits above Delaware's $82,855.

Between 2019 and 2023, New Castle County's population grew 3.0% from 556,165 to 573,030, while its median household income rose 21.7% from $73,892 to $89,901.

The median resident is 39.2 years old. The largest age group is 5 to 17, 15.9% of residents.

Demographics

ACS 2019–2023

Population: 573,030
Median age: 39.2 yrs
Median household income: $89,901
Median home value: $329,800
Median gross rent: $1,379
Housing units: 235,057
Homeownership rate: 68.5%
Bachelor's degree or higher: 39.2%
Unemployment rate: 4.9%

Trends

ACS 5-year · 2019–2023

Population

556,165573,030

Median household income

$73,892$89,901

Median home value

$260,800$329,800

Median gross rent

$1,163$1,379

Year	Population	Median household income	Median home value	Median gross rent
2019	556,165	$73,892	$260,800	$1,163
2020	558,306	$75,275	$266,500	$1,182
2021	567,769	$78,428	$275,600	$1,228
2022	570,567	$85,309	$312,000	$1,327
2023	573,030	$89,901	$329,800	$1,379

Each year is a US Census Bureau ACS 5-year estimate ending that year.

Age distribution

Under 55.5%

5 to 1715.9%

18 to 249.1%

25 to 3414.0%

35 to 4413.0%

45 to 5412.4%

55 to 6413.5%

65 to 749.9%

75 and over6.7%

	Count	Share
Under 5	31,591	5.5%
5 to 17	90,962	15.9%
18 to 24	51,934	9.1%
25 to 34	80,062	14.0%
35 to 44	74,643	13.0%
45 to 54	71,135	12.4%
55 to 64	77,542	13.5%
65 to 74	56,952	9.9%
75 and over	38,209	6.7%

Race & ethnicity

	Count	Share
White (non-Hispanic)	306,451	53.5%
Black or African American	141,051	24.6%
American Indian & Alaska Native	340	0.1%
Asian	33,842	5.9%
Native Hawaiian & Pacific Islander	169	0.0%
Some other race	2,896	0.5%
Two or more races	22,889	4.0%
Hispanic or Latino (any race)	65,392	11.4%

Educational attainment (age 25+)

No high school diploma7.4%

High school graduate27.3%

Some college or associate's26.0%

Bachelor's degree22.3%

Graduate or professional degree17.0%

	Count	Share
No high school diploma	29,527	7.4%
High school graduate	108,893	27.3%
Some college or associate's	103,810	26.0%
Bachelor's degree	88,735	22.3%
Graduate or professional degree	67,578	17.0%

Commute to work

Mean travel time to work: 25 min

Drove alone70.7%

Carpooled7.5%

Public transit2.6%

Walked2.2%

Bicycle0.2%

Worked from home15.5%

Other means1.2%

How workers get to work

	Count	Share
Drove alone	202,899	70.7%
Carpooled	21,567	7.5%
Public transit	7,374	2.6%
Walked	6,339	2.2%
Bicycle	711	0.2%
Worked from home	44,554	15.5%
Other means	3,485	1.2%

Travel time

	Count	Share
Under 15 min	56,624	23.4%
15 to 29 min	107,095	44.2%
30 to 44 min	45,871	18.9%
45 to 59 min	16,415	6.8%
60+ min	16,370	6.8%

Households

Average household size: 2.50
Poverty rate: 10.2% (56,807 of 556,738)

	Count	Share
Family households	140,474	63.0%
Nonfamily households	82,469	37.0%

Housing

Median year structure built: 1975

Occupancy

	Count	Share
Occupied	222,943	94.8%
Vacant	12,114	5.2%

Tenure (of occupied units)

	Count	Share
Owner-occupied	152,742	68.5%
Renter-occupied	70,201	31.5%

1-unit, detached52.8%

1-unit, attached21.3%

2 to 4 units4.7%

5 to 19 units11.6%

20 or more units7.3%

Mobile home & other2.2%

Units in structure

	Count	Share
1-unit, detached	124,150	52.8%
1-unit, attached	50,139	21.3%
2 to 4 units	11,039	4.7%
5 to 19 units	27,348	11.6%
20 or more units	17,114	7.3%
Mobile home & other	5,267	2.2%

Geography

County GEOID: 10003
State: Delaware
Land area: 426 sq mi
Water area: 68 sq mi
Center point: 39.5759, -75.6441