Seaford ZIP Code List — Nassau County, NY

There is one unique ZIP code in Seaford, New York and it is 11783. Area code: 516/631.

ZIP codes

3.54

sq mi land

0.04

sq mi water

516/631

area code

Seaford, NY ZIP code map

About Seaford, NY

Seaford, NY, is a charming community located within Nassau County on Long Island. This picturesque town, situated on the South Shore, offers a suburban lifestyle with a small-town feel. Residents and visitors alike appreciate its scenic beauty and proximity to the water.

Location & geography

Seaford spans a land area of 3.54 square miles, with a minimal water area of 0.04 square miles. The town is bordered by Lt. Joseph P. Kennedy Jr. Park and is conveniently located near major transportation routes. Nearby cities include Wantagh, approximately 2 miles to the west, Merrick, about 3 miles to the north, Massapequa, roughly 4 miles to the east, and Bellmore, also around 3 miles to the south.

Community & economy

Seaford has a close-knit community atmosphere characterized by friendly neighbors and local events. The town's economy thrives on industry sectors such as retail, service, and education, providing jobs for its residents. Daily life in Seaford revolves around family-friendly amenities, a strong school system, and recreational activities along the nearby waterways.

Transportation

Seaford is well-connected through major highways, including the Southern State Parkway and Sunrise Highway, facilitating easy commutes to surrounding areas. The nearest airport is John F. Kennedy International Airport, located about 15 miles to the northwest. Public transit options include the Long Island Rail Road, which provides convenient access to New York City and other destinations.

History

Seaford was originally settled in the 17th century and was primarily an agricultural community. The development of the Long Island Rail Road in the 19th century contributed to its growth and transformation into a suburban town. Key industries have evolved over the years, integrating into the larger Long Island regional economy.

Did you know?

One surprising fact about Seaford is that it was once home to a popular amusement park called Seaford Amusement Park in the early 20th century. Additionally, the town is known for its vibrant waterfront, which attracts fishing and boating enthusiasts.

ZIP codes for Seaford, NY (1)

ZIP code	City	County	Map
11783	Seaford	Nassau	View map

Demographics & statistics

21,916

Population

40.9

Median age

$157,983

Median household income

$60,831

Per capita income

$603,000

Median home value

$2,639

Median monthly rent

95.9%

Home ownership

2.3%

Poverty rate

4.5%

Unemployment

7,014

Housing units

44.6%

Bachelor's or higher

Age distribution

Male Female

463

Under 5

448

652

5–9

629

605

10–14

585

880

15–19

850

807

20–24

780

1,524

25–34

1,473

1,130

35–44

1,091

1,453

45–54

1,404

962

55–59

930

736

60–64

711

1,114

65–74

1,076

558

75–84

539

262

85+

254

← Male

Female →

Age summary

Group	Count	%
Under 18	4,530	20.7%
18 and over	17,386	79.3%
65 and over	3,803	17.4%
Median age	40.9 years

Race & ethnicity

White 86.6%

Asian 3.5%

Hispanic or Latino 3%

Two or more races 2.9%

Black or African American 2.6%

Other race 1.3%

American Indian / Alaska Native 0.1%

Group	Count	%
White	19,570	86.6%
Asian	792	3.5%
Hispanic or Latino	686	3%
Two or more races	647	2.9%
Black or African American	579	2.6%
Other race	295	1.3%
American Indian / Alaska Native	33	0.1%

Household income

Under $10k 0.5%

$10k–$15k 0.6%

$15k–$25k 2.4%

$25k–$35k 2.4%

$35k–$50k 3.7%

$50k–$75k 7.8%

$75k–$100k 7.9%

$100k–$150k 22.9%

$150k–$200k 15.8%

$200k+ 35.9%

Range	% of households
Under $10k	0.5%
$10k–$15k	0.6%
$15k–$25k	2.4%
$25k–$35k	2.4%
$35k–$50k	3.7%
$50k–$75k	7.8%
$75k–$100k	7.9%
$100k–$150k	22.9%
$150k–$200k	15.8%
$200k+	35.9%
Median income	$157,983

Housing

Home values

Under $50k 0.2%

$50k–$100k 0.6%

$100k–$150k 0.5%

$150k–$200k 0.8%

$200k–$300k 0.4%

$300k–$500k 22.5%

$500k–$1M 73.1%

$1M+ 1.9%

Housing overview

Metric	Value
Median home value	$603,000
Median rent / month	$2,639
Owner occupied	95.9%
Renter occupied	4.1%
Vacant	2.8%
Single-family detached	94.1%
Large apartment buildings	1.0%
Mobile homes	0.6%
Median rooms	7.0
Avg household size (owned)	3.09

Year built

Era	%
2020 or later	0.0%
2010–2019	2.6%
2000–2009	2.1%
1990–1999	1.5%
1980–1989	3.5%
1970–1979	6.6%
1960–1969	12.9%
1950–1959	57.0%
1940–1949	4.4%
1939 or earlier	9.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.0%
1 bedroom	2.3%
2 bedrooms	5.2%
3 bedrooms	49.6%
4 bedrooms	33.2%
5+ bedrooms	9.8%

Vehicles per household

Vehicles	% of households
No vehicle	2.2%
1 vehicle	18.3%
2 vehicles	43.3%
3 or more	36.1%

Heating fuel

Fuel type	%
Utility gas	59.6%
Electricity	1.4%
Propane / LP gas	0.5%
Fuel oil	37.9%
No fuel used	0.4%

Households & families

Household type	Count	%
Married-couple family	4,915	69.2%
Cohabiting couple	226	3.2%
Male householder, no spouse	749	10.5%
Female householder, no spouse	1,211	17.1%
Households with children under 18	2,640	37.2%
Households with seniors (65+)	2,493	35.1%
Average household size	3.07

Marital status

Status	Male	Female
Never married	33.4%	28.9%
Married	57.0%	54.9%
Separated	0.3%	1.0%
Widowed	3.9%	8.2%
Divorced	5.4%	7.0%

Education

Less than 9th grade 2.1%

Some HS, no diploma 1.4%

HS graduate 23.5%

Some college, no degree 17.0%

Associate's degree 11.4%

Bachelor's degree 25.4%

Graduate / professional 19.2%

Metric	%
HS diploma or higher	96.5%
Bachelor's or higher	44.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	348	6.1%
Kindergarten	184	3.2%
Elementary school	2,038	35.8%
High school	1,557	27.4%
College / grad school	1,562	27.5%

Employment

Industry of employment

Education & healthcare 29.0%

Professional & management 13.5%

Public administration 8.7%

Finance & real estate 8.1%

Construction 7.5%

Arts, food & hospitality 7.1%

Transportation & utilities 5.9%

Retail trade 5.8%

Manufacturing 3.8%

Information 3.7%

Other services 3.7%

Wholesale trade 3.2%

Occupation

Category	%
Management, business & arts	49.5%
Service	16.4%
Sales & office	20.3%
Natural resources & construction	7.5%
Production & transportation	6.2%

Employment type

Type	%
Private sector	75.1%
Government	23.0%
Self-employed	1.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	70.0%
Carpool	6.3%
Public transit	14.5%
Walk	0.6%
Other means	0.3%
Avg commute (minutes)	38.1

Poverty

All people 2.3%

Under 18 years 3.6%

18 and over 1.9%

Married-couple families 1.1%

Female-led households 4.7%

Income support

Source	% of households
Social Security	34.9%
Retirement income	30.3%
Supplemental Security	5.3%
Cash public assistance	1.6%
Food stamps / SNAP	2.8%

Health indicators

Condition	%
High blood pressure	27.5%
High cholesterol	34.1%
Heart disease	5.1%
Stroke	2.2%
Asthma	8.5%
Arthritis	20.0%
Kidney disease	2.3%
Pulmonary disease	4.7%
Cancer	7.2%

Behavior / access	%
Binge drinking	16.3%
No physical activity	17.2%
Less than 7 hrs sleep	31.9%
Fair or poor health	8.2%
Poor mental health	12.2%
Poor physical health	7.1%
No health insurance	8.2%
Visited doctor (checkup)	79.5%
Visited dentist	75.8%
Cholesterol screening	93.4%
Teeth loss	7.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	693	4.0%

Disability	%
Any disability	8.9%
Under 18	3.6%
18–64 years	5.0%
65 and over	29.6%

Health insurance coverage

Type	%
Private insurance	89.1%
Public insurance	25.7%
Uninsured under 19	3.2%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	21,005	95.8%
Spanish	741	3.5%
Other Indo-European	378	1.8%
Asian & Pacific Islander	230	1.1%
Other languages	121	0.6%

Place of birth & citizenship

Origin	Count	%
Native born (US)	20,135	91.9%
Born in same state	19,935	91.0%
Born in different state	19,061	87.0%
Foreign born	200	0.9%
Naturalized citizen	1,781	8.1%
Not a US citizen	1,662	93.3%

Ancestry

Ancestry	Count	%
Italian	4,853	22.1%
French	1,038	4.7%
Arab	806	3.7%
German	324	1.5%
Polish	222	1%

Ancestry	Count	%
English	141	0.6%
Irish	63	0.3%
Norwegian	58	0.3%
Dutch	45	0.2%

Technology access

Metric	% of households
Computer access	32.4%
Internet access	97.1%

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

Frequently asked questions

What is the ZIP code for Seaford, NY?

Seaford, NY has one ZIP code: 11783.

What is the main ZIP code for Seaford, NY?

The primary ZIP code for Seaford, NY is 11783. The city uses area code 516 or 631 for phone service.

What county is Seaford, NY in?

Seaford is located in Nassau County, New York.

How many ZIP codes are in Seaford, NY?

Seaford, NY has 1 ZIP code.

What ZIP code covers the Seaford Harbor area and waterfront districts in Seaford, NY?

The Seaford Harbor waterfront area is located in ZIP code 11783, which encompasses the central and coastal portions of Seaford in Nassau County.

What is the ZIP code for the downtown Seaford business district along Merrick Road?

The downtown Seaford commercial district along Merrick Road is served by ZIP code 11783, the only ZIP code that covers Seaford, NY.