Middletown ZIP Code List — New Castle County, DE

There is one unique ZIP code in Middletown, Delaware and it is 19709. Area code: 302.

ZIP codes

77.65

sq mi land

6.05

sq mi water

302

area code

Middletown, DE ZIP code map

About Middletown, DE

Middletown, Delaware, is a charming town located in New Castle County, known for its rich history and vibrant community. The city, with a single ZIP code of 19709, serves as a hub for residents seeking both suburban tranquility and easy access to urban amenities. Residents and visitors alike appreciate Middletown's unique blend of historical significance and modern conveniences.

Location & geography

Middletown is situated in the northern part of Delaware, with easy access to major roadways that connect it to nearby cities. It is approximately 25 miles from Wilmington to the north and about 45 miles from Philadelphia, Pennsylvania, to the northwest. The land area of Middletown spans 77.65 square miles, which includes 6.05 square miles of water, contributing to a diverse landscape that features parks and recreational areas.

Community & economy

The character of Middletown is defined by its strong sense of community and family-friendly atmosphere, making it a desirable place to live and work. This town has a mix of retail, service industries, and educational institutions that contribute to its economy and daily life. Residents enjoy various community events, outdoor activities, and a close-knit feeling among neighbors.

Transportation

Middletown is conveniently accessible via major highways, particularly Route 301, which connects to other regional thoroughfares. The nearest major airport is the Philadelphia International Airport, located about 45 miles away, offering extensive domestic and international travel options. Public transit options are limited, but local community shuttles provide service within the town.

History

Middletown was founded in the early 19th century and has grown significantly since then, especially as a suburb of the larger cities nearby. Historically, the town was known for its agricultural roots, but it has since diversified into various sectors, contributing to its development. Notable events in its history include the expansion of infrastructure to accommodate the growing population and the establishment of organizations that support the community's needs.

Did you know?

One surprising fact about Middletown is that it boasts a vibrant arts community, with various local artists and art events enriching the cultural landscape of the town. Additionally, Middletown is home to several historic buildings and sites that reflect its heritage and attract visitors interested in Delaware's history.

ZIP codes for Middletown, DE (1)

ZIP code	City	County	Map
19709	Middletown	New Castle	View map

Demographics & statistics

48,954

Population

40.4

Median age

$119,790

Median household income

$51,823

Per capita income

$416,600

Median home value

$1,456

Median monthly rent

84.5%

Home ownership

4.7%

Poverty rate

5.9%

Unemployment

14,690

Housing units

46.3%

Bachelor's or higher

Age distribution

Male Female

1,278

Under 5

1,430

1,449

5–9

1,620

2,214

10–14

2,477

1,929

15–19

2,157

740

20–24

828

2,642

25–34

2,956

2,718

35–44

3,040

3,174

45–54

3,551

1,608

55–59

1,798

1,401

60–64

1,568

2,344

65–74

2,621

1,312

75–84

1,467

298

85+

334

← Male

Female →

Age summary

Group	Count	%
Under 18	13,207	27.0%
18 and over	35,747	73.0%
65 and over	8,376	17.1%
Median age	40.4 years

Race & ethnicity

White 58.4%

Black or African American 23.5%

Asian 6.1%

Hispanic or Latino 5%

Two or more races 4.9%

Other race 2%

American Indian / Alaska Native 0.1%

Group	Count	%
White	30,117	58.4%
Black or African American	12,108	23.5%
Asian	3,125	6.1%
Hispanic or Latino	2,573	5%
Two or more races	2,528	4.9%
Other race	1,043	2%
American Indian / Alaska Native	33	0.1%

Household income

Under $10k 2.9%

$10k–$15k 0.8%

$15k–$25k 4.3%

$25k–$35k 2.9%

$35k–$50k 7.7%

$50k–$75k 7.9%

$75k–$100k 13.2%

$100k–$150k 25.1%

$150k–$200k 15.1%

$200k+ 20.1%

Range	% of households
Under $10k	2.9%
$10k–$15k	0.8%
$15k–$25k	4.3%
$25k–$35k	2.9%
$35k–$50k	7.7%
$50k–$75k	7.9%
$75k–$100k	13.2%
$100k–$150k	25.1%
$150k–$200k	15.1%
$200k+	20.1%
Median income	$119,790

Housing

Home values

Under $50k 2.2%

$50k–$100k 1.0%

$100k–$150k 0.2%

$150k–$200k 1.4%

$200k–$300k 14.4%

$300k–$500k 54.3%

$500k–$1M 25.2%

$1M+ 1.3%

Housing overview

Metric	Value
Median home value	$416,600
Median rent / month	$1,456
Owner occupied	84.5%
Renter occupied	15.5%
Vacant	1.5%
Single-family detached	65.2%
Large apartment buildings	2.2%
Mobile homes	0.7%
Median rooms	7.4
Avg household size (owned)	2.91

Year built

Era	%
2020 or later	2.5%
2010–2019	28.5%
2000–2009	34.9%
1990–1999	18.9%
1980–1989	6.8%
1970–1979	2.5%
1960–1969	0.6%
1950–1959	1.9%
1940–1949	0.5%
1939 or earlier	2.9%

Bedrooms

Size	% of units
No bedroom (studio)	0.7%
1 bedroom	2.3%
2 bedrooms	13.0%
3 bedrooms	41.0%
4 bedrooms	34.3%
5+ bedrooms	8.7%

Vehicles per household

Vehicles	% of households
No vehicle	2.4%
1 vehicle	22.2%
2 vehicles	48.3%
3 or more	27.1%

Heating fuel

Fuel type	%
Utility gas	68.3%
Electricity	20.3%
Propane / LP gas	5.5%
Fuel oil	5.1%
Wood	0.5%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	10,778	63.2%
Cohabiting couple	917	5.4%
Male householder, no spouse	1,265	7.4%
Female householder, no spouse	4,107	24.1%
Households with children under 18	6,837	40.1%
Households with seniors (65+)	5,683	33.3%
Average household size	2.86

Marital status

Status	Male	Female
Never married	25.8%	26.7%
Married	64.0%	53.4%
Separated	1.6%	1.0%
Widowed	2.0%	8.2%
Divorced	6.6%	10.7%

Education

Less than 9th grade 2.7%

Some HS, no diploma 2.0%

HS graduate 19.4%

Some college, no degree 18.7%

Associate's degree 11.0%

Bachelor's degree 26.0%

Graduate / professional 20.3%

Metric	%
HS diploma or higher	95.3%
Bachelor's or higher	46.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	715	5.2%
Kindergarten	394	2.9%
Elementary school	6,326	45.8%
High school	4,255	30.8%
College / grad school	2,115	15.3%

Employment

Industry of employment

Education & healthcare 27.5%

Finance & real estate 14.0%

Professional & management 11.8%

Retail trade 8.8%

Manufacturing 7.3%

Arts, food & hospitality 6.8%

Public administration 6.0%

Construction 5.2%

Transportation & utilities 4.2%

Wholesale trade 3.3%

Other services 3.1%

Information 1.1%

Agriculture & mining 1.0%

Occupation

Category	%
Management, business & arts	54.6%
Service	13.6%
Sales & office	18.1%
Natural resources & construction	5.2%
Production & transportation	8.5%

Employment type

Type	%
Private sector	81.7%
Government	14.8%
Self-employed	3.4%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	78.2%
Carpool	5.1%
Public transit	1.0%
Walk	0.5%
Other means	1.1%
Avg commute (minutes)	30.6

Poverty

All people 4.7%

Under 18 years 4.4%

18 and over 4.8%

Married-couple families 2.3%

Female-led households 18.4%

Income support

Source	% of households
Social Security	32.2%
Retirement income	31.4%
Supplemental Security	3.7%
Cash public assistance	1.8%
Food stamps / SNAP	6.3%

Health indicators

Condition	%
High blood pressure	29.4%
High cholesterol	29.5%
Heart disease	4.6%
Stroke	2.2%
Asthma	10.1%
Arthritis	19.4%
Kidney disease	2.3%
Pulmonary disease	4.8%
Cancer	5.5%

Behavior / access	%
Binge drinking	18.9%
No physical activity	19.5%
Less than 7 hrs sleep	33.2%
Fair or poor health	10.5%
Poor mental health	13.3%
Poor physical health	8.5%
No health insurance	11.3%
Visited doctor (checkup)	72.8%
Visited dentist	71.0%
Cholesterol screening	91.1%
Teeth loss	8.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	2,449	6.9%

Disability	%
Any disability	10.9%
Under 18	4.2%
18–64 years	8.0%
65 and over	31.1%

Health insurance coverage

Type	%
Private insurance	81.8%
Public insurance	28.7%
Uninsured under 19	1.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	46,246	94.5%
Spanish	1,923	4.2%
Other Indo-European	571	1.2%
Asian & Pacific Islander	972	2.1%
Other languages	313	0.7%

Place of birth & citizenship

Origin	Count	%
Native born (US)	43,758	89.4%
Born in same state	43,369	88.6%
Born in different state	20,437	41.7%
Foreign born	389	0.8%
Naturalized citizen	5,196	10.6%
Not a US citizen	3,490	67.2%

Ancestry

Ancestry	Count	%
Italian	6,782	13.9%
French	5,797	11.8%
Arab	1,557	3.2%
English	659	1.3%
Norwegian	237	0.5%

Ancestry	Count	%
Polish	217	0.4%
Irish	157	0.3%
Dutch	99	0.2%
German	64	0.1%

Technology access

Metric	% of households
Computer access	34.9%
Internet access	97.3%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions

What is the ZIP code for Middletown, DE?

Middletown, DE has one ZIP code: 19709.

What is the main ZIP code for Middletown, DE?

The primary ZIP code for Middletown, DE is 19709. The city uses area code 302 for phone service.

What county is Middletown, DE in?

Middletown is located in New Castle County, Delaware.

How many ZIP codes are in Middletown, DE?

Middletown, DE has 1 ZIP code.

What ZIP code should I use for mailing packages to businesses in downtown Middletown, Delaware?

Downtown Middletown and the central business district use ZIP code 19709, which covers the main commercial area along Main Street and surrounding neighborhoods in New Castle County.

What is the ZIP code for the Middletown area near the Middletown High School campus?

The Middletown High School area and surrounding residential neighborhoods are located in ZIP code 19709, which encompasses the entire city of Middletown, Delaware.