Selden ZIP Code List — Suffolk County, NY

There is one unique ZIP code in Selden, New York and it is 11784. Area code: 631.

ZIP codes

5.48

sq mi land

0.00

sq mi water

631

area code

Selden, NY ZIP code map

About Selden, NY

Selden, New York is a quaint community located within Suffolk County. It offers a mix of suburban tranquility and local charm that attracts residents and visitors alike. The city is known for its friendly atmosphere and easy access to various amenities and services.

Location & geography

Selden is situated in the eastern part of Suffolk County, approximately 10 miles northwest of the popular beach town of Port Jefferson. It is bordered by neighboring communities such as Centereach to the south and Coram to the north. The total land area of Selden is 5.48 square miles, and it has no significant water areas.

Community & economy

The character of Selden is defined by its family-friendly environment and a strong sense of community. Industries in the area are primarily retail and service-oriented, catering to the needs of the local population. Daily life in Selden features a variety of parks, schools, and recreational activities, making it an appealing place to live and raise a family.

Transportation

Selden is easily accessible via major roadways, including Nicolls Road (Route 97) and Middle Country Road (Route 25). The nearest airport is Long Island MacArthur Airport, located approximately 15 miles to the southwest. Public transit options are available, providing connections to nearby towns and cities.

History

Selden was established in the mid-19th century and has grown steadily since then, evolving from an agrarian community to a suburban area. The city has historically relied on agriculture, but today it sees a mix of commerce and residential growth. Notable events in its history include the development of the local school district and various community initiatives.

Did you know?

One surprising fact about Selden is that it is home to the Selden Plaza, a common gathering spot for locals to shop and socialize. Additionally, Selden often hosts community events that strengthen neighborhood ties and promote local culture.

ZIP codes for Selden, NY (1)

ZIP code	City	County	Map
11784	Selden	Suffolk	View map

Demographics & statistics

25,425

Population

37.8

Median age

$108,913

Median household income

$41,531

Per capita income

$406,500

Median home value

$2,247

Median monthly rent

87.4%

Home ownership

4.8%

Poverty rate

5.4%

Unemployment

7,482

Housing units

28.6%

Bachelor's or higher

Age distribution

Male Female

834

Under 5

843

693

5–9

700

772

10–14

779

922

15–19

932

874

20–24

883

1,760

25–34

1,777

1,426

35–44

1,441

1,898

45–54

1,918

736

55–59

743

850

60–64

859

1,087

65–74

1,098

550

75–84

555

246

85+

249

← Male

Female →

Age summary

Group	Count	%
Under 18	5,668	22.3%
18 and over	19,757	77.7%
65 and over	3,785	14.9%
Median age	37.8 years

Race & ethnicity

White 62.9%

Hispanic or Latino 11.8%

Two or more races 10.3%

Asian 5.9%

Black or African American 4.9%

Other race 3.9%

American Indian / Alaska Native 0.4%

Group	Count	%
White	18,115	62.9%
Hispanic or Latino	3,388	11.8%
Two or more races	2,954	10.3%
Asian	1,688	5.9%
Black or African American	1,412	4.9%
Other race	1,136	3.9%
American Indian / Alaska Native	120	0.4%

Household income

Under $10k 2.4%

$10k–$15k 1.7%

$15k–$25k 4.3%

$25k–$35k 3.9%

$35k–$50k 5.2%

$50k–$75k 14.4%

$75k–$100k 15.5%

$100k–$150k 23.4%

$150k–$200k 13.1%

$200k+ 16.3%

Range	% of households
Under $10k	2.4%
$10k–$15k	1.7%
$15k–$25k	4.3%
$25k–$35k	3.9%
$35k–$50k	5.2%
$50k–$75k	14.4%
$75k–$100k	15.5%
$100k–$150k	23.4%
$150k–$200k	13.1%
$200k+	16.3%
Median income	$108,913

Housing

Home values

Under $50k 2.3%

$100k–$150k 1.2%

$150k–$200k 2.7%

$200k–$300k 9.3%

$300k–$500k 65.0%

$500k–$1M 18.4%

$1M+ 1.1%

Housing overview

Metric	Value
Median home value	$406,500
Median rent / month	$2,247
Owner occupied	87.4%
Renter occupied	12.6%
Vacant	3.7%
Single-family detached	84.3%
Large apartment buildings	1.6%
Mobile homes	0.0%
Median rooms	6.5
Avg household size (owned)	3.16

Year built

Era	%
2020 or later	0.0%
2010–2019	1.0%
2000–2009	3.0%
1990–1999	9.3%
1980–1989	8.5%
1970–1979	25.4%
1960–1969	32.2%
1950–1959	12.1%
1940–1949	4.8%
1939 or earlier	3.7%

Bedrooms

Size	% of units
No bedroom (studio)	1.5%
1 bedroom	8.2%
2 bedrooms	13.4%
3 bedrooms	41.4%
4 bedrooms	27.4%
5+ bedrooms	8.1%

Vehicles per household

Vehicles	% of households
No vehicle	2.1%
1 vehicle	26.0%
2 vehicles	43.1%
3 or more	28.7%

Heating fuel

Fuel type	%
Utility gas	41.9%
Electricity	5.2%
Propane / LP gas	4.5%
Fuel oil	47.4%
Wood	0.4%
Solar	0.3%
No fuel used	0.1%

Households & families

Household type	Count	%
Married-couple family	4,960	60.5%
Cohabiting couple	358	4.4%
Male householder, no spouse	1,183	14.4%
Female householder, no spouse	1,703	20.8%
Households with children under 18	3,115	38.0%
Households with seniors (65+)	2,811	34.3%
Average household size	3.09

Marital status

Status	Male	Female
Never married	35.0%	31.9%
Married	53.5%	49.3%
Separated	2.7%	1.3%
Widowed	2.8%	10.6%
Divorced	6.0%	6.9%

Education

Less than 9th grade 2.8%

Some HS, no diploma 3.8%

HS graduate 33.1%

Some college, no degree 19.2%

Associate's degree 12.5%

Bachelor's degree 16.7%

Graduate / professional 11.9%

Metric	%
HS diploma or higher	93.4%
Bachelor's or higher	28.6%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	597	9.7%
Kindergarten	333	5.4%
Elementary school	2,037	33.3%
High school	1,777	29.0%
College / grad school	1,382	22.6%

Employment

Industry of employment

Education & healthcare 28.9%

Retail trade 14.8%

Professional & management 9.5%

Construction 7.5%

Finance & real estate 7.3%

Transportation & utilities 6.8%

Manufacturing 5.9%

Arts, food & hospitality 4.7%

Public administration 4.2%

Wholesale trade 4.0%

Other services 4.0%

Information 2.4%

Occupation

Category	%
Management, business & arts	39.2%
Service	15.7%
Sales & office	25.3%
Natural resources & construction	8.7%
Production & transportation	11.1%

Employment type

Type	%
Private sector	75.2%
Government	20.4%
Self-employed	4.3%
Unpaid family workers	0.1%

Commute

Method	%
Drive alone	81.6%
Carpool	7.1%
Public transit	3.6%
Walk	0.2%
Other means	1.2%
Avg commute (minutes)	30.2

Poverty

All people 4.8%

Under 18 years 5.8%

18 and over 4.6%

Married-couple families 2.1%

Female-led households 8.9%

Income support

Source	% of households
Social Security	35.5%
Retirement income	24.1%
Supplemental Security	4.3%
Cash public assistance	1.1%
Food stamps / SNAP	5.4%

Health indicators

Condition	%
High blood pressure	25.8%
High cholesterol	28.0%
Heart disease	4.6%
Stroke	2.2%
Asthma	9.6%
Arthritis	17.9%
Kidney disease	2.3%
Pulmonary disease	5.2%
Cancer	5.6%

Behavior / access	%
Binge drinking	19.4%
No physical activity	21.9%
Less than 7 hrs sleep	34.9%
Fair or poor health	10.4%
Poor mental health	14.2%
Poor physical health	8.3%
No health insurance	11.3%
Visited doctor (checkup)	76.7%
Visited dentist	67.6%
Cholesterol screening	90.6%
Teeth loss	11.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	808	4.1%

Disability	%
Any disability	11.8%
Under 18	2.6%
18–64 years	9.9%
65 and over	33.5%

Health insurance coverage

Type	%
Private insurance	75.1%
Public insurance	33.8%
Uninsured under 19	2.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	23,748	93.4%
Spanish	1,134	4.8%
Other Indo-European	552	2.3%
Asian & Pacific Islander	455	1.9%
Other languages	127	0.5%

Place of birth & citizenship

Origin	Count	%
Native born (US)	22,401	88.1%
Born in same state	22,234	87.4%
Born in different state	21,052	82.8%
Foreign born	167	0.7%
Naturalized citizen	3,024	11.9%
Not a US citizen	2,262	74.8%

Ancestry

Ancestry	Count	%
Italian	3,736	14.7%
Arab	2,333	9.2%
French	898	3.5%
German	108	0.4%
Irish	79	0.3%

Ancestry	Count	%
Polish	68	0.3%
English	47	0.2%
Norwegian	36	0.1%
Dutch	32	0.1%

Technology access

Metric	% of households
Computer access	32.3%
Internet access	97.8%

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

Frequently asked questions

What is the ZIP code for Selden, NY?

Selden, NY has one ZIP code: 11784.

What is the main ZIP code for Selden, NY?

The primary ZIP code for Selden, NY is 11784. The city uses area code 631 for phone service.

What county is Selden, NY in?

Selden is located in Suffolk County, New York.

How many ZIP codes are in Selden, NY?

Selden, NY has 1 ZIP code.

What is the ZIP code for the Selden downtown area and main commercial district?

The Selden downtown area is located in ZIP code 11784, which covers the central portion of the hamlet along Route 25.

Which ZIP code should I use for mailing addresses to businesses and residences in Selden, NY?

All addresses in Selden use the single ZIP code 11784, as this is the only ZIP code that serves the entire hamlet in Suffolk County.