11733 ZIP Code — East Setauket, NY

Suffolk County, New York

ZIP code 11733 is located in East Setauket, New York, within Suffolk County. It covers approximately 11.74 square miles and serves a population of 17,304 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 631.

About ZIP code 11733

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1960s, giving the area an established character. Median home value is $629,400. Owner-occupancy is high at 85%, well above the national average.

The gap between median ($170,074) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 4% is below the national average. 31% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. The average commute of 32 minutes is near the national average.

Educational attainment is high — 63% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 11733 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.

17,304

population

11.74

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

11733 ZIP code map

Cities in ZIP code 11733

Below are the cities the US Postal Service accepts for ZIP code 11733. Using any city not on this list may result in mail delivery delays.

City	Status
East Setauket	Acceptable
East Setauket	Acceptable
East Setauket	Preferred

Nearby ZIP codes

11794 Stony Brook (1.4 mi) 11790 Stony Brook (1.8 mi) 11777 Port Jefferson (2.9 mi) 11776 Port Jefferson Station (3.8 mi) 11720 Centereach (4.4 mi) 11780 Saint James (4.4 mi) 11755 Lake Grove (5 mi) 11766 Mount Sinai (5.3 mi) 11784 Selden (5.8 mi) 11767 Nesconset (6.2 mi) 11727 Coram (6.7 mi) 11764 Miller Place (6.9 mi)

Demographics updated 05/2026

Population
Total population	17,304
Population density	1,474 / sq mi
State FIPS	36
County FIPS	103

Geography
Land area	11.74 sq mi
Water area	4.47 sq mi
Latitude	40.9304
Longitude	-73.1121
Timezone	Eastern (ET)
Area code	631

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	14.2%	22.6%	37.0%
$50k – $100k	16.6%	24.7%	27.0%
$100k – $200k	32.0%	34.6%	24.4%
Over $200k	37.1%	18.0%	11.5%

Demographics & statistics

17,304

Population

1,474

People per sq mi

45.4

Median age

$170,074

Median household income

$79,927

Per capita income

$629,400

Median home value

$2,369

Median monthly rent

85.4%

Home ownership

4.3%

Poverty rate

4.7%

Unemployment

5,665

Housing units

63.2%

Bachelor's or higher

Age distribution

Male Female

391

Under 5

372

505

5–9

482

633

10–14

603

598

15–19

571

659

20–24

629

749

25–34

714

836

35–44

796

1,301

45–54

1,240

690

55–59

658

817

60–64

778

996

65–74

949

412

75–84

393

272

85+

260

← Male

Female →

Age summary

Group	Count	%
Under 18	3,817	22.1%
18 and over	13,487	77.9%
65 and over	3,282	19.0%
Median age	45.4 years

Race & ethnicity

White 77.6%

Asian 8.5%

Two or more races 5.6%

Hispanic or Latino 4.7%

Other race 2%

Black or African American 1.6%

Group	Count	%
White	14,089	77.6%
Asian	1,549	8.5%
Two or more races	1,008	5.6%
Hispanic or Latino	847	4.7%
Other race	365	2%
Black or African American	285	1.6%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	14.2%	22.6%	37.0%
$50k – $100k	16.6%	24.7%	27.0%
$100k – $200k	32.0%	34.6%	24.4%
Over $200k	37.1%	18.0%	11.5%

Under $10k 0.6%

$10k–$15k 1.4%

$15k–$25k 2.0%

$25k–$35k 4.8%

$35k–$50k 4.9%

$50k–$75k 8.2%

$75k–$100k 6.3%

$100k–$150k 17.3%

$150k–$200k 12.6%

$200k+ 41.9%

Range	% of households
Under $10k	0.6%
$10k–$15k	1.4%
$15k–$25k	2.0%
$25k–$35k	4.8%
$35k–$50k	4.9%
$50k–$75k	8.2%
$75k–$100k	6.3%
$100k–$150k	17.3%
$150k–$200k	12.6%
$200k+	41.9%
Median income	$170,074

Housing

Home values

Under $50k 0.9%

$50k–$100k 1.9%

$100k–$150k 1.5%

$150k–$200k 1.0%

$200k–$300k 1.2%

$300k–$500k 20.5%

$500k–$1M 61.8%

$1M+ 11.3%

Housing overview

Metric	Value
Median home value	$629,400
Median rent / month	$2,369
Owner occupied	85.4%
Renter occupied	14.6%
Vacant	8.1%
Single-family detached	84.9%
Large apartment buildings	1.7%
Mobile homes	1.9%
Median rooms	7.4
Avg household size (owned)	2.89

Year built

Era	%
2020 or later	0.0%
2010–2019	2.0%
2000–2009	5.0%
1990–1999	11.8%
1980–1989	12.7%
1970–1979	15.8%
1960–1969	29.9%
1950–1959	8.1%
1940–1949	3.1%
1939 or earlier	11.6%

Bedrooms

Size	% of units
No bedroom (studio)	1.0%
1 bedroom	4.7%
2 bedrooms	9.0%
3 bedrooms	34.5%
4 bedrooms	38.3%
5+ bedrooms	12.5%

Vehicles per household

Vehicles	% of households
No vehicle	3.8%
1 vehicle	21.4%
2 vehicles	46.5%
3 or more	28.4%

Heating fuel

Fuel type	%
Utility gas	42.9%
Electricity	3.5%
Propane / LP gas	2.1%
Fuel oil	50.2%
Wood	0.2%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	4,015	66.8%
Cohabiting couple	233	3.9%
Male householder, no spouse	707	11.8%
Female householder, no spouse	1,055	17.6%
Households with children under 18	2,010	33.4%
Households with seniors (65+)	2,047	34.1%
Average household size	2.81

Marital status

Status	Male	Female
Never married	30.9%	26.4%
Married	59.2%	59.1%
Separated	0.9%	0.6%
Widowed	2.5%	6.6%
Divorced	6.5%	7.3%

Education

Less than 9th grade 1.5%

Some HS, no diploma 1.4%

HS graduate 14.1%

Some college, no degree 11.2%

Associate's degree 8.6%

Bachelor's degree 23.2%

Graduate / professional 40.0%

Metric	%
HS diploma or higher	97.1%
Bachelor's or higher	63.2%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	116	2.6%
Kindergarten	207	4.7%
Elementary school	1,780	40.6%
High school	977	22.3%
College / grad school	1,299	29.7%

Employment

Industry of employment

Education & healthcare 41.6%

Professional & management 11.3%

Finance & real estate 8.4%

Retail trade 7.7%

Public administration 6.3%

Construction 4.8%

Other services 4.4%

Transportation & utilities 4.3%

Arts, food & hospitality 4.2%

Manufacturing 3.6%

Information 1.9%

Wholesale trade 1.6%

Agriculture & mining 0.1%

Occupation

Category	%
Management, business & arts	60.9%
Service	9.3%
Sales & office	18.3%
Natural resources & construction	7.1%
Production & transportation	4.4%

Employment type

Type	%
Private sector	63.9%
Government	30.7%
Self-employed	5.1%
Unpaid family workers	0.3%

Commute

Method	%
Drive alone	74.9%
Carpool	4.7%
Public transit	3.3%
Walk	0.3%
Work from home	16.3%
Other means	0.5%
Avg commute (minutes)	31.8

Poverty

All people 4.3%

Under 18 years 3.3%

18 and over 4.6%

Married-couple families 1.5%

Female-led households 7.7%

Income support

Source	% of households
Social Security	31.0%
Retirement income	27.6%
Supplemental Security	2.4%
Cash public assistance	1.1%
Food stamps / SNAP	2.0%

Health indicators

Condition	%
Obesity	23.8%
High blood pressure	26.6%
High cholesterol	30.4%
Diabetes	7.1%
Heart disease	4.9%
Stroke	2.1%
Asthma	8.7%
Arthritis	18.5%
Kidney disease	2.3%
Pulmonary disease	4.2%
Cancer	7.0%

Behavior / access	%
Smoking	10.0%
Binge drinking	17.9%
No physical activity	16.8%
Less than 7 hrs sleep	31.1%
Depression	15.5%
Fair or poor health	7.6%
Poor mental health	11.4%
Poor physical health	6.8%
No health insurance	6.9%
Visited doctor (checkup)	79.1%
Visited dentist	75.9%
Cholesterol screening	93.5%
Teeth loss	7.0%

Veterans & disability

Veterans	Count	%
Civilian veterans	635	4.7%

Disability	%
Any disability	6.8%
Under 18	1.4%
18–64 years	4.4%
65 and over	22.1%

Health insurance coverage

Type	%
Private insurance	88.5%
Public insurance	26.2%
No insurance	1.0%
Uninsured under 19	0.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	16,541	95.6%
Spanish	494	3.0%
Other Indo-European	48	0.3%
Asian & Pacific Islander	207	1.3%
Other languages	228	1.4%

Place of birth & citizenship

Origin	Count	%
Native born (US)	15,299	88.4%
Born in same state	15,144	87.5%
Born in different state	13,226	76.4%
Foreign born	155	0.9%
Naturalized citizen	2,005	11.6%
Not a US citizen	1,614	80.5%

Ancestry

Ancestry	Count	%
Italian	3,554	20.5%
Arab	1,051	6.1%
French	907	5.2%
Irish	199	1.2%
Polish	191	1.1%

Ancestry	Count	%
German	92	0.5%
English	82	0.5%
Dutch	70	0.4%
Norwegian	55	0.3%

Technology access

Metric	% of households
Computer access	34.7%
Internet access	98.2%

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

Frequently asked questions about ZIP code 11733

What city is ZIP code 11733 in?

ZIP code 11733 is primarily assigned to East Setauket, New York.

What county is ZIP code 11733 in?

ZIP code 11733 falls within Suffolk County, New York.

How educated is the population of ZIP code 11733?

63% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 11733 mostly owner-occupied?

85% of occupied units in ZIP code 11733 are owner-occupied, well above the national average.

What is the median household income in ZIP code 11733?

The median household income in ZIP code 11733 is $170,074, above the national median of ~$75,000.

What is the typical home value in ZIP code 11733?

The median home value in ZIP code 11733 is $629,400.

What timezone is ZIP code 11733 in?

ZIP code 11733 observes the EST timezone.