Islip ZIP Code List — Suffolk County, NY

There is one unique ZIP code in Islip, New York and it is 11751. Area code: 631.

ZIP codes

3.96

sq mi land

0.64

sq mi water

631

area code

Islip, NY ZIP code map

About Islip, NY

Islip, NY, is a charming village located in Suffolk County, New York. Known for its picturesque neighborhoods and friendly community atmosphere, Islip is a desirable place for families and individuals alike. With a rich history and convenient access to various attractions, Islip offers both serene living and vibrant local culture.

Location & geography

Islip is situated on the southern shore of Long Island, approximately 25 miles east of New York City. It is bordered by several nearby cities, including Bay Shore to the northwest, Hauppauge to the north, and Islip Terrace to the east. The village spans a land area of 3.96 square miles, complemented by a water area of 0.64 square miles, providing diverse natural landscapes.

Community & economy

Islip boasts a tight-knit community character, where residents often engage in local events and cultural activities. The economy thrives on a mix of industries, including retail, healthcare, and education, catering to a diverse population's needs. Daily life in Islip is enhanced by local parks, recreational opportunities, and intimate dining options, making it an inviting environment.

Transportation

Islip is well-connected by major highways, including the Long Island Expressway (I-495) and Sunrise Highway (NY-27), facilitating easy travel across the region. The nearest airport is Long Island MacArthur Airport, located just a few miles away, offering both commercial and private flights. Public transit options are available through local bus services that connect residents to surrounding areas.

History

Founded in the late 19th century, Islip grew significantly as a hub for agriculture and shipping along the Great South Bay. The area has evolved over the decades, with the introduction of various industries contributing to its development and economic stability. Notable events, such as the establishment of recreational marinas and parks, have made Islip a popular destination for both residents and visitors.

Did you know?

One surprising fact about Islip is that it is home to the Islip Arts Council, which promotes local artists and cultural events throughout the year. Additionally, Islip has a historic lighthouse, the Fire Island Lighthouse, which is a popular attraction for tourists and locals alike.

ZIP codes for Islip, NY (1)

ZIP code	City	County	Map
11751	Islip	Suffolk	View map

Demographics & statistics

13,501

Population

45.6

Median age

$114,185

Median household income

$51,894

Per capita income

$469,300

Median home value

$2,311

Median monthly rent

83.7%

Home ownership

4.9%

Poverty rate

5.3%

Unemployment

4,611

Housing units

35.4%

Bachelor's or higher

Age distribution

Male Female

331

Under 5

346

294

5–9

308

297

10–14

311

323

15–19

338

311

20–24

325

924

25–34

966

773

35–44

808

830

45–54

869

568

55–59

595

633

60–64

663

712

65–74

744

397

75–84

416

205

85+

214

← Male

Female →

Age summary

Group	Count	%
Under 18	2,305	17.1%
18 and over	11,196	82.9%
65 and over	2,688	19.9%
Median age	45.6 years

Race & ethnicity

White 73%

Hispanic or Latino 8.2%

Two or more races 7%

Asian 5.7%

Other race 3.2%

Black or African American 2.9%

Group	Count	%
White	10,736	73%
Hispanic or Latino	1,201	8.2%
Two or more races	1,023	7%
Asian	832	5.7%
Other race	477	3.2%
Black or African American	433	2.9%

Household income

Under $10k 5.3%

$10k–$15k 0.6%

$15k–$25k 3.0%

$25k–$35k 3.4%

$35k–$50k 6.8%

$50k–$75k 15.5%

$75k–$100k 8.8%

$100k–$150k 23.4%

$150k–$200k 12.9%

$200k+ 20.2%

Range	% of households
Under $10k	5.3%
$10k–$15k	0.6%
$15k–$25k	3.0%
$25k–$35k	3.4%
$35k–$50k	6.8%
$50k–$75k	15.5%
$75k–$100k	8.8%
$100k–$150k	23.4%
$150k–$200k	12.9%
$200k+	20.2%
Median income	$114,185

Housing

Home values

Under $50k 1.9%

$50k–$100k 1.2%

$100k–$150k 1.9%

$150k–$200k 4.0%

$200k–$300k 6.3%

$300k–$500k 42.5%

$500k–$1M 40.5%

$1M+ 1.7%

Housing overview

Metric	Value
Median home value	$469,300
Median rent / month	$2,311
Owner occupied	83.7%
Renter occupied	16.3%
Vacant	5.1%
Single-family detached	70.2%
Large apartment buildings	7.9%
Mobile homes	1.8%
Median rooms	6.4
Avg household size (owned)	2.67

Year built

Era	%
2020 or later	0.0%
2010–2019	0.4%
2000–2009	3.2%
1990–1999	4.2%
1980–1989	13.5%
1970–1979	14.8%
1960–1969	23.9%
1950–1959	19.9%
1940–1949	5.0%
1939 or earlier	15.2%

Bedrooms

Size	% of units
No bedroom (studio)	2.4%
1 bedroom	11.1%
2 bedrooms	27.2%
3 bedrooms	27.7%
4 bedrooms	25.8%
5+ bedrooms	5.8%

Vehicles per household

Vehicles	% of households
No vehicle	8.8%
1 vehicle	35.3%
2 vehicles	28.2%
3 or more	27.7%

Heating fuel

Fuel type	%
Utility gas	44.6%
Electricity	12.0%
Propane / LP gas	3.2%
Fuel oil	39.2%
Wood	0.5%

Households & families

Household type	Count	%
Married-couple family	2,744	53.0%
Cohabiting couple	140	2.7%
Male householder, no spouse	936	18.1%
Female householder, no spouse	1,358	26.2%
Households with children under 18	1,229	23.7%
Households with seniors (65+)	1,852	35.8%
Average household size	2.59

Marital status

Status	Male	Female
Never married	31.0%	29.3%
Married	55.6%	49.9%
Separated	2.6%	0.1%
Widowed	3.7%	11.6%
Divorced	7.0%	9.1%

Education

Less than 9th grade 8.6%

Some HS, no diploma 3.7%

HS graduate 27.7%

Some college, no degree 14.1%

Associate's degree 10.5%

Bachelor's degree 18.7%

Graduate / professional 16.6%

Metric	%
HS diploma or higher	87.7%
Bachelor's or higher	35.4%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	83	3.2%
Kindergarten	161	6.3%
Elementary school	871	34.0%
High school	532	20.8%
College / grad school	914	35.7%

Employment

Industry of employment

Education & healthcare 29.2%

Professional & management 15.0%

Retail trade 12.2%

Finance & real estate 7.3%

Manufacturing 7.0%

Construction 5.9%

Public administration 5.0%

Transportation & utilities 4.9%

Arts, food & hospitality 4.9%

Other services 3.8%

Wholesale trade 2.5%

Information 2.3%

Occupation

Category	%
Management, business & arts	48.6%
Service	15.3%
Sales & office	21.7%
Natural resources & construction	6.7%
Production & transportation	7.7%

Employment type

Type	%
Private sector	79.0%
Government	17.5%
Self-employed	2.9%
Unpaid family workers	0.6%

Commute

Method	%
Drive alone	81.2%
Carpool	6.6%
Public transit	3.6%
Walk	0.6%
Other means	0.7%
Avg commute (minutes)	29.4

Poverty

All people 4.9%

Under 18 years 3.1%

18 and over 5.2%

Married-couple families 0.5%

Female-led households 16.9%

Income support

Source	% of households
Social Security	34.8%
Retirement income	31.6%
Supplemental Security	8.3%
Cash public assistance	0.8%
Food stamps / SNAP	4.3%

Health indicators

Condition	%
High blood pressure	26.6%
High cholesterol	29.7%
Heart disease	4.8%
Stroke	2.2%
Asthma	9.4%
Arthritis	18.7%
Kidney disease	2.3%
Pulmonary disease	5.0%
Cancer	6.4%

Behavior / access	%
Binge drinking	18.9%
No physical activity	19.9%
Less than 7 hrs sleep	33.3%
Fair or poor health	9.4%
Poor mental health	13.0%
Poor physical health	7.9%
No health insurance	9.6%
Visited doctor (checkup)	77.9%
Visited dentist	71.3%
Cholesterol screening	92.2%
Teeth loss	9.5%

Veterans & disability

Veterans	Count	%
Civilian veterans	493	4.4%

Disability	%
Any disability	12.9%
Under 18	6.7%
18–64 years	9.3%
65 and over	29.7%

Health insurance coverage

Type	%
Private insurance	79.9%
Public insurance	32.2%
Uninsured under 19	2.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	12,824	95.0%
Spanish	587	4.6%
Other Indo-European	387	3.0%
Asian & Pacific Islander	40	0.3%
Other languages	137	1.1%

Place of birth & citizenship

Origin	Count	%
Native born (US)	12,102	89.6%
Born in same state	12,077	89.5%
Born in different state	11,008	81.5%
Foreign born	25	0.2%
Naturalized citizen	1,399	10.4%
Not a US citizen	810	57.9%

Ancestry

Ancestry	Count	%
Italian	2,910	21.6%
French	912	6.8%
Arab	498	3.7%
Norwegian	147	1.1%

Ancestry	Count	%
Polish	112	0.8%
Irish	101	0.7%
German	56	0.4%
English	17	0.1%

Technology access

Metric	% of households
Computer access	38.4%
Internet access	89.6%

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

Frequently asked questions

What is the ZIP code for Islip, NY?

Islip, NY has one ZIP code: 11751.

What is the main ZIP code for Islip, NY?

The primary ZIP code for Islip, NY is 11751. The city uses area code 631 for phone service.

What county is Islip, NY in?

Islip is located in Suffolk County, New York.

How many ZIP codes are in Islip, NY?

Islip, NY has 1 ZIP code.

What ZIP code covers the downtown Islip area along the Great South Bay waterfront?

The downtown Islip waterfront area, including the historic Islip Town Hall and bay-facing neighborhoods, is located in ZIP code 11751.

What is the ZIP code for the residential neighborhoods in central Islip near the Islip Library?

The central Islip residential areas, including neighborhoods near the Islip Public Library, use ZIP code 11751 for mail delivery.