11790 ZIP Code — Stony Brook, NY

Suffolk County, New York

ZIP code 11790 is located in Stony Brook, New York, within Suffolk County. It covers approximately 7.29 square miles and serves a population of 19,282 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 631.

About ZIP code 11790

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 $579,700. Owner-occupancy is high at 89%, well above the national average.

The gap between median ($145,545) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 5% is below the national average. 37% 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 31 minutes is near the national average.

Educational attainment is high — 67% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 11790 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.

19,282

population

7.29

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

11790 ZIP code map

Cities in ZIP code 11790

Below are the cities the US Postal Service accepts for ZIP code 11790. Using any city not on this list may result in mail delivery delays.

City	Status
Stony Brook	Acceptable
Stony Brook	Preferred

Nearby ZIP codes

11794 Stony Brook (0.4 mi) 11733 East Setauket (1.8 mi) 11780 Saint James (3.1 mi) 11720 Centereach (3.2 mi) 11755 Lake Grove (3.3 mi) 11776 Port Jefferson Station (4.3 mi) 11767 Nesconset (4.4 mi) 11777 Port Jefferson (4.4 mi) 11784 Selden (5.3 mi) 11787 Smithtown (5.4 mi) 11779 Ronkonkoma (6.3 mi) 11766 Mount Sinai (6.3 mi)

Demographics updated 05/2026

Population
Total population	19,282
Population density	2,645 / sq mi
State FIPS	36
County FIPS	103

Geography
Land area	7.29 sq mi
Water area	0.44 sq mi
Latitude	40.9060
Longitude	-73.1251
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	14.8%	22.6%	37.0%
$50k – $100k	21.4%	24.7%	27.0%
$100k – $200k	38.1%	34.6%	24.4%
Over $200k	25.7%	18.0%	11.5%

Demographics & statistics

19,282

Population

2,645

People per sq mi

23.3

Median age

$145,545

Median household income

$48,293

Per capita income

$579,700

Median home value

$2,836

Median monthly rent

89.2%

Home ownership

4.7%

Poverty rate

5.9%

Unemployment

4,400

Housing units

67.3%

Bachelor's or higher

Age distribution

Male Female

349

Under 5

333

363

5–9

347

333

10–14

318

2,072

15–19

1,982

2,120

20–24

2,028

856

25–34

819

551

35–44

527

989

45–54

946

434

55–59

415

388

60–64

372

805

65–74

770

407

75–84

389

189

85+

180

← Male

Female →

Age summary

Group	Count	%
Under 18	2,694	14.0%
18 and over	16,588	86.0%
65 and over	2,740	14.2%
Median age	23.3 years

Race & ethnicity

White 62.7%

Asian 23.2%

Black or African American 4.8%

Hispanic or Latino 4.1%

Two or more races 4%

Other race 1.2%

American Indian / Alaska Native 0.1%

Group	Count	%
White	12,594	62.7%
Asian	4,659	23.2%
Black or African American	970	4.8%
Hispanic or Latino	818	4.1%
Two or more races	799	4%
Other race	237	1.2%
American Indian / Alaska Native	23	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	14.8%	22.6%	37.0%
$50k – $100k	21.4%	24.7%	27.0%
$100k – $200k	38.1%	34.6%	24.4%
Over $200k	25.7%	18.0%	11.5%

Under $10k 0.9%

$10k–$15k 1.4%

$15k–$25k 3.3%

$25k–$35k 1.1%

$35k–$50k 4.9%

$50k–$75k 5.7%

$75k–$100k 11.4%

$100k–$150k 22.8%

$150k–$200k 14.6%

$200k+ 33.7%

Range	% of households
Under $10k	0.9%
$10k–$15k	1.4%
$15k–$25k	3.3%
$25k–$35k	1.1%
$35k–$50k	4.9%
$50k–$75k	5.7%
$75k–$100k	11.4%
$100k–$150k	22.8%
$150k–$200k	14.6%
$200k+	33.7%
Median income	$145,545

Housing

Home values

Under $50k 0.5%

$50k–$100k 0.7%

$100k–$150k 0.7%

$150k–$200k 0.5%

$200k–$300k 1.4%

$300k–$500k 27.7%

$500k–$1M 66.1%

$1M+ 2.4%

Housing overview

Metric	Value
Median home value	$579,700
Median rent / month	$2,836
Owner occupied	89.2%
Renter occupied	10.8%
Vacant	8.1%
Single-family detached	91.1%
Large apartment buildings	0.0%
Mobile homes	0.7%
Median rooms	7.0
Avg household size (owned)	2.66

Year built

Era	%
2020 or later	0.6%
2010–2019	0.1%
2000–2009	3.3%
1990–1999	1.5%
1980–1989	8.6%
1970–1979	14.6%
1960–1969	49.2%
1950–1959	12.8%
1940–1949	3.0%
1939 or earlier	6.3%

Bedrooms

Size	% of units
No bedroom (studio)	1.4%
1 bedroom	4.3%
2 bedrooms	7.6%
3 bedrooms	41.4%
4 bedrooms	35.2%
5+ bedrooms	10.2%

Vehicles per household

Vehicles	% of households
No vehicle	5.7%
1 vehicle	20.7%
2 vehicles	48.4%
3 or more	25.2%

Heating fuel

Fuel type	%
Utility gas	35.4%
Electricity	6.8%
Propane / LP gas	0.9%
Fuel oil	56.0%
Solar	0.7%

Households & families

Household type	Count	%
Married-couple family	2,908	64.8%
Cohabiting couple	91	2.0%
Male householder, no spouse	573	12.8%
Female householder, no spouse	916	20.4%
Households with children under 18	1,424	31.7%
Households with seniors (65+)	1,886	42.0%
Average household size	2.72

Marital status

Status	Male	Female
Never married	58.5%	51.9%
Married	36.4%	36.2%
Separated	0.5%	1.7%
Widowed	1.4%	5.2%
Divorced	3.2%	4.9%

Education

Less than 9th grade 0.3%

Some HS, no diploma 0.9%

HS graduate 13.4%

Some college, no degree 9.5%

Associate's degree 8.6%

Bachelor's degree 25.7%

Graduate / professional 41.6%

Metric	%
HS diploma or higher	98.8%
Bachelor's or higher	67.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	255	2.5%
Kindergarten	328	3.2%
Elementary school	850	8.4%
High school	636	6.3%
College / grad school	8,064	79.6%

Employment

Industry of employment

Education & healthcare 42.6%

Professional & management 12.2%

Arts, food & hospitality 10.2%

Retail trade 9.0%

Finance & real estate 5.5%

Construction 4.5%

Public administration 3.6%

Transportation & utilities 3.5%

Manufacturing 3.4%

Other services 2.5%

Wholesale trade 1.8%

Information 1.3%

Occupation

Category	%
Management, business & arts	54.8%
Service	15.5%
Sales & office	22.7%
Natural resources & construction	4.9%
Production & transportation	2.1%

Employment type

Type	%
Private sector	65.6%
Government	29.9%
Self-employed	4.5%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	54.8%
Carpool	7.3%
Public transit	7.3%
Walk	15.1%
Work from home	14.2%
Other means	1.3%
Avg commute (minutes)	31.1

Poverty

All people 4.7%

Under 18 years 0.6%

18 and over 5.8%

Married-couple families 0.5%

Female-led households 2.2%

Income support

Source	% of households
Social Security	37.3%
Retirement income	31.2%
Supplemental Security	2.3%
Cash public assistance	0.0%
Food stamps / SNAP	1.9%

Health indicators

Condition	%
Obesity	20.6%
High blood pressure	20.6%
High cholesterol	23.8%
Diabetes	5.3%
Heart disease	3.6%
Stroke	1.5%
Asthma	8.9%
Arthritis	13.9%
Kidney disease	1.8%
Pulmonary disease	3.3%
Cancer	5.3%

Behavior / access	%
Smoking	8.8%
Binge drinking	19.6%
No physical activity	15.9%
Less than 7 hrs sleep	30.9%
Depression	15.9%
Fair or poor health	6.5%
Poor mental health	13.0%
Poor physical health	5.6%
No health insurance	8.0%
Visited doctor (checkup)	77.1%
Visited dentist	75.5%
Cholesterol screening	88.8%
Teeth loss	6.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	322	1.9%

Disability	%
Any disability	7.1%
Under 18	1.0%
18–64 years	5.1%
65 and over	23.0%

Health insurance coverage

Type	%
Private insurance	86.1%
Public insurance	24.3%
No insurance	1.2%
Uninsured under 19	1.1%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	18,600	96.5%
Spanish	1,511	8.1%
Other Indo-European	154	0.8%
Asian & Pacific Islander	229	1.2%
Other languages	1,111	6.0%

Place of birth & citizenship

Origin	Count	%
Native born (US)	15,629	81.1%
Born in same state	15,394	79.8%
Born in different state	13,198	68.4%
Foreign born	235	1.2%
Naturalized citizen	3,653	18.9%
Not a US citizen	1,692	46.3%

Ancestry

Ancestry	Count	%
Italian	2,823	14.6%
Arab	955	5%
French	853	4.4%
Polish	127	0.7%

Ancestry	Count	%
Irish	101	0.5%
Norwegian	96	0.5%
English	41	0.2%

Technology access

Metric	% of households
Computer access	23.3%
Internet access	96.0%

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

Frequently asked questions about ZIP code 11790

What city is ZIP code 11790 in?

ZIP code 11790 is primarily assigned to Stony Brook, New York.

What county is ZIP code 11790 in?

ZIP code 11790 falls within Suffolk County, New York.

How educated is the population of ZIP code 11790?

67% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 11790 mostly owner-occupied?

89% of occupied units in ZIP code 11790 are owner-occupied, well above the national average.

Does ZIP code 11790 have a large retiree population?

37% of households in ZIP code 11790 receive Social Security income, suggesting a significant retiree or disability population.

What is the median household income in ZIP code 11790?

The median household income in ZIP code 11790 is $145,545, above the national median of ~$75,000.

What timezone is ZIP code 11790 in?

ZIP code 11790 observes the EST timezone.