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New York ZIP Codes
Suffolk County
Great River, NY
11739
11739 ZIP Code — Great River, NY
Suffolk County, New York
ZIP code 11739 is located in
Great River ,
New York ,
within Suffolk County .
It covers approximately 3.55 square miles and serves a population of
1,400 residents.
This is a standard ZIP code in the Eastern (ET) timezone,
served by area code 631 .
About ZIP code 11739
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 $824,100. Owner-occupancy is high at 96%, well above the national average.
The gap between median ($164,464) and mean household income suggests income inequality — a small number of higher earners pull the average up. 47% 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 33 minutes is near the national average.
Educational attainment is high — 59% of residents hold a bachelor's degree or higher, well above the national average of 33%.
Overall, ZIP code 11739 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.
11739 ZIP code map
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Cities in ZIP code 11739
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Demographics
updated 06/2026
Population
Total population
1,400
Population density
394 / sq mi
State FIPS
36
County FIPS
103
Geography
Land area
3.55 sq mi
Water area
1.57 sq mi
Latitude
40.7198
Longitude
-73.1545
Timezone
Eastern (ET)
Area code
631
Economics
updated 06/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
16.1%
22.6%
37.0%
$50k – $100k
20.4%
24.7%
27.0%
$100k – $200k
24.3%
34.6%
24.4%
Over $200k
39.2%
18.0%
11.5%
Demographics & statistics
$164,464
Median household income
$824,100
Median home value
58.8%
Bachelor's or higher
Age distribution
Age summary
Group Count % Under 18 195 13.9% 18 and over 1,205 86.1% 65 and over 319 22.8% Median age 52.0 years
Race & ethnicity
Group Count % White 1,236 82% Two or more races 126 8.4% Hispanic or Latino 107 7.1% Asian 38 2.5%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
16.1%
22.6%
37.0%
$50k – $100k
20.4%
24.7%
27.0%
$100k – $200k
24.3%
34.6%
24.4%
Over $200k
39.2%
18.0%
11.5%
Range % of households $10k–$15k 1.6% $15k–$25k 12.1% $35k–$50k 9.6% $50k–$75k 6.8% $75k–$100k 6.7% $100k–$150k 11.0% $150k–$200k 16.4% $200k+ 35.8% Median income $164,464
Housing
Housing overview
Metric Value Median home value $824,100 Median rent / month $0 Owner occupied 95.5% Renter occupied 4.5% Vacant 12.2% Single-family detached 95.4% Large apartment buildings 0.0% Mobile homes 0.0% Median rooms 7.6 Avg household size (owned) 2.82
Year built
Era % 2020 or later 0.0% 2010–2019 0.0% 2000–2009 2.4% 1990–1999 1.4% 1980–1989 1.7% 1970–1979 16.0% 1960–1969 46.6% 1950–1959 19.1% 1940–1949 0.0% 1939 or earlier 12.9%
Bedrooms
Size % of units No bedroom (studio) 0.0% 1 bedroom 10.0% 2 bedrooms 1.0% 3 bedrooms 37.1% 4 bedrooms 34.0% 5+ bedrooms 17.9%
Vehicles per household
Vehicles % of households No vehicle 1.6% 1 vehicle 27.8% 2 vehicles 23.9% 3 or more 46.8%
Heating fuel
Fuel type % Utility gas 74.0% Electricity 3.7% Propane / LP gas 2.5% Fuel oil 19.8%
Households & families
Household type Count % Married-couple family 326 63.8% Cohabiting couple 0 0.0% Male householder, no spouse 16 3.1% Female householder, no spouse 169 33.1% Households with children under 18 87 17.0% Households with seniors (65+) 240 47.0% Average household size 2.74
Marital status
Status Male Female Never married 44.2% 25.7% Married 52.8% 47.8% Separated 0.0% 0.8% Widowed 1.3% 19.0% Divorced 1.6% 6.8%
Education
Some college, no degree
8.2%
Graduate / professional
31.1%
Metric % HS diploma or higher 96.2% Bachelor's or higher 58.8%
School enrollment (ages 3–17)
Type Count % Nursery / preschool 0 0.0% Kindergarten 12 3.7% Elementary school 99 30.4% High school 95 29.1% College / grad school 120 36.8%
Employment
Industry of employment
Education & healthcare
31.9%
Professional & management
17.1%
Finance & real estate
14.0%
Transportation & utilities
7.9%
Arts, food & hospitality
7.8%
Public administration
4.4%
Occupation
Category % Management, business & arts 62.0% Service 16.7% Sales & office 10.2% Natural resources & construction 5.2% Production & transportation 5.8%
Employment type
Type % Private sector 75.2% Government 19.7% Self-employed 5.1% Unpaid family workers 0.0%
Commute
Method % Drive alone 76.0% Carpool 4.6% Public transit 10.4% Walk 0.0% Work from home 9.0% Other means 0.0% Avg commute (minutes) 32.8
Poverty
Married-couple families
0.0%
Female-led households
0.0%
Income support
Source % of households Social Security 46.8% Retirement income 42.3% Supplemental Security 0.0% Cash public assistance 0.0% Food stamps / SNAP 0.0%
Health indicators
Condition % Obesity 23.7% High blood pressure 27.1% High cholesterol 31.4% Diabetes 7.0% Heart disease 4.9% Stroke 2.0% Asthma 8.7% Arthritis 19.4% Kidney disease 2.3% Pulmonary disease 4.2% Cancer 7.7%
Behavior / access % Smoking 9.2% Binge drinking 18.0% No physical activity 15.7% Less than 7 hrs sleep 29.8% Depression 15.4% Fair or poor health 7.1% Poor mental health 10.8% Poor physical health 6.7% No health insurance 5.9% Visited doctor (checkup) 79.9% Visited dentist 78.6% Cholesterol screening 94.4% Teeth loss 6.1%
Veterans & disability
Veterans Count % Civilian veterans 52 4.3%
Disability % Any disability 6.5% Under 18 5.1% 18–64 years 5.2% 65 and over 11.0%
Health insurance coverage
Type % Private insurance 91.9% Public insurance 26.4% No insurance 1.4% Uninsured under 19 0.0%
Language & origin
Language spoken at home (age 5+)
Language Count % English only 1,378 98.4% Spanish 8 0.6% Other Indo-European 0 0.0% Asian & Pacific Islander 8 0.6% Other languages 0 0.0%
Place of birth & citizenship
Origin Count % Native born (US) 1,364 97.4% Born in same state 1,359 97.1% Born in different state 1,253 89.5% Foreign born 5 0.4% Naturalized citizen 36 2.6% Not a US citizen 36 100.0%
Ancestry
Ancestry Count % Italian 306 21.9% Arab 100 7.1% French 98 7%
Ancestry Count % Polish 14 1% Irish 12 0.9% Dutch 5 0.4%
Technology access
Metric % of households Computer access 36.5% Internet access 89.8%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 11739
What city is ZIP code 11739 in?
ZIP code 11739 is primarily assigned to Great River, New York.
What county is ZIP code 11739 in?
ZIP code 11739 falls within Suffolk County, New York.
Is ZIP code 11739 mostly owner-occupied?
96% of occupied units in ZIP code 11739 are owner-occupied, well above the national average.
How educated is the population of ZIP code 11739?
59% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
Does ZIP code 11739 have a large retiree population?
47% of households in ZIP code 11739 receive Social Security income, suggesting a significant retiree or disability population.
What is the median household income in ZIP code 11739?
The median household income in ZIP code 11739 is $164,464, above the national median of ~$75,000.
What timezone is ZIP code 11739 in?
ZIP code 11739 observes the EST timezone.
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