11777 ZIP Code — Port Jefferson, NY

Suffolk County, New York

ZIP code 11777 is located in Port Jefferson, New York, within Suffolk County. It covers approximately 4.39 square miles and serves a population of 9,257 residents. This is a po box ZIP code in the Eastern (ET) timezone, served by area code 631/516.

About ZIP code 11777

The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $640,300. Owner-occupancy sits near the national average at 73%.

The gap between median ($136,484) 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 30 minutes is near the national average.

Educational attainment is high — 65% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 11777 reflects a community defined by a highly educated population and a significant Social Security-dependent population.

9,257

population

4.39

sq mi land

PO Box

ZIP type

Eastern (ET)

timezone

11777 ZIP code map

Cities in ZIP code 11777

Below are the cities the US Postal Service accepts for ZIP code 11777. Using any city not on this list may result in mail delivery delays.

City	Status
Port Jefferson	Acceptable
Port Jefferson	Acceptable
Port Jefferson	Preferred

Nearby ZIP codes

11733 East Setauket (2.9 mi) 11776 Port Jefferson Station (2.9 mi) 11766 Mount Sinai (3.1 mi) 11794 Stony Brook (4.1 mi) 11790 Stony Brook (4.4 mi) 11764 Miller Place (4.5 mi) 11789 Sound Beach (4.8 mi) 11720 Centereach (5.6 mi) 11784 Selden (5.9 mi) 11727 Coram (6 mi) 11778 Rocky Point (6.9 mi) 11755 Lake Grove (7 mi)

Demographics updated 05/2026

Population
Total population	9,257
Population density	2,109 / sq mi
State FIPS	36
County FIPS	103

Geography
Land area	4.39 sq mi
Water area	2.10 sq mi
Latitude	40.9513
Longitude	-73.0647
Timezone	Eastern (ET)
Area code	631/516

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	15.0%	22.6%	37.0%
$50k – $100k	24.8%	24.7%	27.0%
$100k – $200k	38.5%	34.6%	24.4%
Over $200k	21.8%	18.0%	11.5%

Demographics & statistics

9,257

Population

2,109

People per sq mi

45.7

Median age

$136,484

Median household income

$72,677

Per capita income

$640,300

Median home value

$2,142

Median monthly rent

73.3%

Home ownership

5.2%

Poverty rate

3.4%

Unemployment

2,816

Housing units

64.7%

Bachelor's or higher

Age distribution

Male Female

184

Under 5

183

227

5–9

225

324

10–14

322

277

15–19

274

271

20–24

269

551

25–34

547

451

35–44

447

650

45–54

645

364

55–59

362

259

60–64

256

633

65–74

627

319

75–84

316

138

85+

136

← Male

Female →

Age summary

Group	Count	%
Under 18	1,754	18.9%
18 and over	7,503	81.1%
65 and over	2,169	23.4%
Median age	45.7 years

Race & ethnicity

White 78.5%

Hispanic or Latino 6.1%

Asian 5.9%

Two or more races 5.1%

Other race 3%

Black or African American 1.2%

American Indian / Alaska Native 0.2%

Group	Count	%
White	7,744	78.5%
Hispanic or Latino	603	6.1%
Asian	583	5.9%
Two or more races	502	5.1%
Other race	292	3%
Black or African American	116	1.2%
American Indian / Alaska Native	20	0.2%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	15.0%	22.6%	37.0%
$50k – $100k	24.8%	24.7%	27.0%
$100k – $200k	38.5%	34.6%	24.4%
Over $200k	21.8%	18.0%	11.5%

Under $10k 0.8%

$10k–$15k 1.9%

$15k–$25k 0.7%

$25k–$35k 3.7%

$35k–$50k 5.8%

$50k–$75k 11.5%

$75k–$100k 10.3%

$100k–$150k 20.8%

$150k–$200k 11.0%

$200k+ 33.6%

Range	% of households
Under $10k	0.8%
$10k–$15k	1.9%
$15k–$25k	0.7%
$25k–$35k	3.7%
$35k–$50k	5.8%
$50k–$75k	11.5%
$75k–$100k	10.3%
$100k–$150k	20.8%
$150k–$200k	11.0%
$200k+	33.6%
Median income	$136,484

Housing

Home values

$100k–$150k 0.9%

$300k–$500k 25.8%

$500k–$1M 58.0%

$1M+ 15.3%

Housing overview

Metric	Value
Median home value	$640,300
Median rent / month	$2,142
Owner occupied	73.3%
Renter occupied	26.7%
Vacant	5.5%
Single-family detached	68.2%
Large apartment buildings	4.4%
Mobile homes	0.0%
Median rooms	6.9
Avg household size (owned)	2.65

Year built

Era	%
2020 or later	0.3%
2010–2019	4.4%
2000–2009	6.7%
1990–1999	12.0%
1980–1989	14.3%
1970–1979	11.6%
1960–1969	17.4%
1950–1959	10.5%
1940–1949	4.6%
1939 or earlier	18.2%

Bedrooms

Size	% of units
No bedroom (studio)	2.5%
1 bedroom	13.5%
2 bedrooms	16.7%
3 bedrooms	24.8%
4 bedrooms	30.0%
5+ bedrooms	12.4%

Vehicles per household

Vehicles	% of households
No vehicle	5.0%
1 vehicle	34.4%
2 vehicles	37.3%
3 or more	23.3%

Heating fuel

Fuel type	%
Utility gas	51.3%
Electricity	7.9%
Propane / LP gas	2.1%
Fuel oil	37.7%
Wood	0.4%
Solar	0.3%
No fuel used	0.3%

Households & families

Household type	Count	%
Married-couple family	1,867	52.4%
Cohabiting couple	242	6.8%
Male householder, no spouse	677	19.0%
Female householder, no spouse	775	21.8%
Households with children under 18	809	22.7%
Households with seniors (65+)	1,483	41.6%
Average household size	2.52

Marital status

Status	Male	Female
Never married	37.3%	27.3%
Married	52.3%	50.5%
Separated	1.2%	1.2%
Widowed	1.7%	10.3%
Divorced	7.5%	10.7%

Education

Less than 9th grade 1.6%

Some HS, no diploma 2.6%

HS graduate 14.4%

Some college, no degree 10.8%

Associate's degree 6.0%

Bachelor's degree 24.0%

Graduate / professional 40.7%

Metric	%
HS diploma or higher	95.9%
Bachelor's or higher	64.7%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	109	5.0%
Kindergarten	20	0.9%
Elementary school	912	41.6%
High school	442	20.2%
College / grad school	709	32.3%

Employment

Industry of employment

Education & healthcare 36.9%

Professional & management 17.5%

Retail trade 7.4%

Public administration 5.8%

Arts, food & hospitality 5.7%

Construction 5.6%

Manufacturing 5.6%

Finance & real estate 5.6%

Other services 3.9%

Transportation & utilities 3.8%

Information 1.2%

Wholesale trade 1.1%

Occupation

Category	%
Management, business & arts	64.5%
Service	11.5%
Sales & office	15.2%
Natural resources & construction	4.5%
Production & transportation	4.3%

Employment type

Type	%
Private sector	71.5%
Government	22.7%
Self-employed	5.7%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	77.1%
Carpool	6.1%
Public transit	4.4%
Walk	0.9%
Work from home	10.4%
Other means	1.0%
Avg commute (minutes)	30.4

Poverty

All people 5.2%

Under 18 years 2.6%

18 and over 5.8%

Married-couple families 0.8%

Female-led households 4.9%

Income support

Source	% of households
Social Security	36.9%
Retirement income	28.9%
Supplemental Security	3.0%
Cash public assistance	0.8%
Food stamps / SNAP	3.1%

Health indicators

Condition	%
Obesity	24.4%
High blood pressure	27.6%
High cholesterol	31.0%
Diabetes	7.4%
Heart disease	5.1%
Stroke	2.2%
Asthma	8.8%
Arthritis	19.7%
Kidney disease	2.4%
Pulmonary disease	4.6%
Cancer	7.4%

Behavior / access	%
Smoking	10.6%
Binge drinking	17.5%
No physical activity	17.4%
Less than 7 hrs sleep	31.1%
Depression	15.7%
Fair or poor health	8.2%
Poor mental health	11.4%
Poor physical health	7.2%
No health insurance	7.4%
Visited doctor (checkup)	79.3%
Visited dentist	75.2%
Cholesterol screening	93.7%
Teeth loss	7.2%

Veterans & disability

Veterans	Count	%
Civilian veterans	267	3.6%

Disability	%
Any disability	10.6%
Under 18	0.6%
18–64 years	6.9%
65 and over	27.9%

Health insurance coverage

Type	%
Private insurance	81.6%
Public insurance	31.0%
No insurance	3.1%
Uninsured under 19	2.6%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	8,890	96.0%
Spanish	370	4.2%
Other Indo-European	171	1.9%
Asian & Pacific Islander	87	1.0%
Other languages	99	1.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	7,790	84.2%
Born in same state	7,725	83.5%
Born in different state	6,319	68.3%
Foreign born	65	0.7%
Naturalized citizen	1,467	15.8%
Not a US citizen	818	55.8%

Ancestry

Ancestry	Count	%
Italian	1,931	20.9%
French	688	7.4%
Arab	564	6.1%
English	112	1.2%
Polish	85	0.9%

Ancestry	Count	%
Irish	64	0.7%
Norwegian	17	0.2%
Dutch	17	0.2%
German	11	0.1%

Technology access

Metric	% of households
Computer access	38.5%
Internet access	97.4%

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

Frequently asked questions about ZIP code 11777

What city is ZIP code 11777 in?

ZIP code 11777 is primarily assigned to Port Jefferson, New York.

What county is ZIP code 11777 in?

ZIP code 11777 falls within Suffolk County, New York.

How educated is the population of ZIP code 11777?

65% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 11777 have a large retiree population?

37% of households in ZIP code 11777 receive Social Security income, suggesting a significant retiree or disability population.

What is the median household income in ZIP code 11777?

The median household income in ZIP code 11777 is $136,484, above the national median of ~$75,000.

What is the typical home value in ZIP code 11777?

The median home value in ZIP code 11777 is $640,300.

What timezone is ZIP code 11777 in?

ZIP code 11777 observes the EST timezone.