11788 ZIP Code — Hauppauge, NY

Suffolk County, New York

ZIP code 11788 is located in Hauppauge, New York, within Suffolk County. It covers approximately 8.60 square miles and serves a population of 17,017 residents. This is a po box ZIP code in the Eastern (ET) timezone, served by area code 631.

About ZIP code 11788

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 $617,200. Owner-occupancy is high at 81%, well above the national average.

The gap between median ($139,903) 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. 36% 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 — 48% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 11788 reflects a community defined by high homeownership and a significant Social Security-dependent population.

17,017

population

8.60

sq mi land

PO Box

ZIP type

Eastern (ET)

timezone

11788 ZIP code map

Cities in ZIP code 11788

Below are the cities the US Postal Service accepts for ZIP code 11788. Using any city not on this list may result in mail delivery delays.

City	Status
Hauppauge	Acceptable
Hauppauge	Preferred

Nearby ZIP codes

11749 Islandia (2.1 mi) 11749 Islandia (2.1 mi) 11722 Central Islip (2.7 mi) 11787 Smithtown (2.9 mi) 11717 Brentwood (3.4 mi) 11767 Nesconset (3.8 mi) 11725 Commack (3.9 mi) 11752 Islip Terrace (4.5 mi) 11779 Ronkonkoma (4.8 mi) 11754 Kings Park (5.2 mi) 11780 Saint James (5.3 mi) 11755 Lake Grove (5.4 mi)

Demographics updated 05/2026

Population
Total population	17,017
Population density	1,979 / sq mi
State FIPS	36
County FIPS	103

Geography
Land area	8.60 sq mi
Water area	0.00 sq mi
Latitude	40.8194
Longitude	-73.2101
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	21.9%	22.6%	37.0%
$50k – $100k	19.2%	24.7%	27.0%
$100k – $200k	36.1%	34.6%	24.4%
Over $200k	22.9%	18.0%	11.5%

Demographics & statistics

17,017

Population

1,979

People per sq mi

42.3

Median age

$139,903

Median household income

$58,979

Per capita income

$617,200

Median home value

$2,492

Median monthly rent

80.6%

Home ownership

5.3%

Poverty rate

5.7%

Unemployment

4,759

Housing units

48.3%

Bachelor's or higher

Age distribution

Male Female

533

Under 5

516

400

5–9

386

413

10–14

399

588

15–19

568

666

20–24

644

1,001

25–34

968

943

35–44

912

1,258

45–54

1,216

865

55–59

837

596

60–64

577

777

65–74

751

435

75–84

420

177

85+

171

← Male

Female →

Age summary

Group	Count	%
Under 18	3,318	19.5%
18 and over	13,699	80.5%
65 and over	2,731	16.0%
Median age	42.3 years

Race & ethnicity

White 73.8%

Asian 7.8%

Hispanic or Latino 7.4%

Two or more races 6.5%

Other race 3.1%

Black or African American 1.3%

American Indian / Alaska Native 0.1%

Group	Count	%
White	13,571	73.8%
Asian	1,440	7.8%
Hispanic or Latino	1,369	7.4%
Two or more races	1,189	6.5%
Other race	570	3.1%
Black or African American	237	1.3%
American Indian / Alaska Native	10	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	21.9%	22.6%	37.0%
$50k – $100k	19.2%	24.7%	27.0%
$100k – $200k	36.1%	34.6%	24.4%
Over $200k	22.9%	18.0%	11.5%

Under $10k 1.5%

$10k–$15k 1.6%

$15k–$25k 3.6%

$25k–$35k 3.1%

$35k–$50k 6.4%

$50k–$75k 9.0%

$75k–$100k 10.8%

$100k–$150k 17.1%

$150k–$200k 15.2%

$200k+ 31.7%

Range	% of households
Under $10k	1.5%
$10k–$15k	1.6%
$15k–$25k	3.6%
$25k–$35k	3.1%
$35k–$50k	6.4%
$50k–$75k	9.0%
$75k–$100k	10.8%
$100k–$150k	17.1%
$150k–$200k	15.2%
$200k+	31.7%
Median income	$139,903

Housing

Home values

Under $50k 0.4%

$50k–$100k 0.5%

$100k–$150k 0.7%

$150k–$200k 0.6%

$200k–$300k 3.4%

$300k–$500k 17.3%

$500k–$1M 74.2%

$1M+ 2.8%

Housing overview

Metric	Value
Median home value	$617,200
Median rent / month	$2,492
Owner occupied	80.6%
Renter occupied	19.4%
Vacant	4.9%
Single-family detached	76.9%
Large apartment buildings	2.9%
Mobile homes	0.4%
Median rooms	7.1
Avg household size (owned)	3.25

Year built

Era	%
2020 or later	0.0%
2010–2019	0.2%
2000–2009	1.1%
1990–1999	10.5%
1980–1989	9.2%
1970–1979	24.4%
1960–1969	44.5%
1950–1959	8.5%
1940–1949	0.8%
1939 or earlier	0.7%

Bedrooms

Size	% of units
No bedroom (studio)	2.0%
1 bedroom	11.7%
2 bedrooms	8.2%
3 bedrooms	29.9%
4 bedrooms	38.7%
5+ bedrooms	9.4%

Vehicles per household

Vehicles	% of households
No vehicle	2.6%
1 vehicle	23.1%
2 vehicles	42.2%
3 or more	32.0%

Heating fuel

Fuel type	%
Utility gas	57.5%
Electricity	7.8%
Propane / LP gas	1.8%
Fuel oil	32.1%
Wood	0.1%
No fuel used	0.1%

Households & families

Household type	Count	%
Married-couple family	3,600	64.9%
Cohabiting couple	292	5.3%
Male householder, no spouse	685	12.3%
Female householder, no spouse	971	17.5%
Households with children under 18	1,754	31.6%
Households with seniors (65+)	1,857	33.5%
Average household size	3.04

Marital status

Status	Male	Female
Never married	33.3%	31.4%
Married	59.6%	53.7%
Separated	0.5%	1.1%
Widowed	1.8%	6.1%
Divorced	4.8%	7.7%

Education

Less than 9th grade 3.8%

Some HS, no diploma 3.3%

HS graduate 19.3%

Some college, no degree 14.2%

Associate's degree 11.1%

Bachelor's degree 27.2%

Graduate / professional 21.1%

Metric	%
HS diploma or higher	92.9%
Bachelor's or higher	48.3%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	180	5.0%
Kindergarten	50	1.4%
Elementary school	1,283	35.7%
High school	926	25.8%
College / grad school	1,157	32.2%

Employment

Industry of employment

Education & healthcare 32.7%

Professional & management 13.3%

Retail trade 10.4%

Manufacturing 7.6%

Finance & real estate 7.3%

Construction 6.7%

Arts, food & hospitality 4.9%

Public administration 4.3%

Wholesale trade 4.1%

Other services 2.9%

Transportation & utilities 2.7%

Information 2.7%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	54.3%
Service	9.7%
Sales & office	25.3%
Natural resources & construction	6.1%
Production & transportation	4.6%

Employment type

Type	%
Private sector	77.2%
Government	19.0%
Self-employed	3.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	83.5%
Carpool	4.0%
Public transit	3.5%
Walk	0.1%
Work from home	7.8%
Other means	1.0%
Avg commute (minutes)	30.2

Poverty

All people 5.3%

Under 18 years 5.3%

18 and over 5.3%

Married-couple families 5.0%

Female-led households 2.1%

Income support

Source	% of households
Social Security	36.2%
Retirement income	33.5%
Supplemental Security	2.5%
Cash public assistance	2.7%
Food stamps / SNAP	4.6%

Health indicators

Condition	%
Obesity	25.6%
High blood pressure	27.8%
High cholesterol	30.6%
Diabetes	7.7%
Heart disease	5.2%
Stroke	2.3%
Asthma	9.0%
Arthritis	19.6%
Kidney disease	2.5%
Pulmonary disease	5.0%
Cancer	7.0%

Behavior / access	%
Smoking	12.3%
Binge drinking	17.7%
No physical activity	19.4%
Less than 7 hrs sleep	32.6%
Depression	16.2%
Fair or poor health	9.1%
Poor mental health	12.2%
Poor physical health	7.7%
No health insurance	8.7%
Visited doctor (checkup)	78.8%
Visited dentist	72.4%
Cholesterol screening	93.0%
Teeth loss	8.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	643	4.7%

Disability	%
Any disability	9.8%
Under 18	4.0%
18–64 years	7.0%
65 and over	28.2%

Health insurance coverage

Type	%
Private insurance	82.8%
Public insurance	27.4%
No insurance	3.4%
Uninsured under 19	1.4%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	15,968	93.8%
Spanish	841	5.3%
Other Indo-European	373	2.3%
Asian & Pacific Islander	158	1.0%
Other languages	257	1.6%

Place of birth & citizenship

Origin	Count	%
Native born (US)	14,904	87.6%
Born in same state	14,602	85.8%
Born in different state	13,655	80.2%
Foreign born	302	1.8%
Naturalized citizen	2,113	12.4%
Not a US citizen	994	47.0%

Ancestry

Ancestry	Count	%
Italian	3,385	19.9%
Arab	1,609	9.5%
French	546	3.2%
Polish	197	1.2%
Irish	100	0.6%

Ancestry	Count	%
Norwegian	55	0.3%
English	23	0.1%
Dutch	8	0%
German	7	0%

Technology access

Metric	% of households
Computer access	32.6%
Internet access	97.8%

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

Frequently asked questions about ZIP code 11788

What city is ZIP code 11788 in?

ZIP code 11788 is primarily assigned to Hauppauge, New York.

What county is ZIP code 11788 in?

ZIP code 11788 falls within Suffolk County, New York.

Is ZIP code 11788 mostly owner-occupied?

81% of occupied units in ZIP code 11788 are owner-occupied, well above the national average.

How educated is the population of ZIP code 11788?

48% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 11788 have a large retiree population?

36% of households in ZIP code 11788 receive Social Security income, suggesting a significant retiree or disability population.

What is the median household income in ZIP code 11788?

The median household income in ZIP code 11788 is $139,903, above the national median of ~$75,000.

What timezone is ZIP code 11788 in?

ZIP code 11788 observes the EST timezone.