PlainZIP

Islip, NY · standard

ZIP Code 11751

Suffolk County, New York - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

14,961
1,436/sq mi
$116,559
Median income
$563,100
Median home value
35.7%
Bachelor's or higher

The verdict

Islip pairs an upper-quartile household income with upper-quartile home values, in a low-density, homeowner-dominated area.

Top 11%
household income, US ZIPs
Top 11%
home value, US ZIPs
1,436
people per sq mi
83%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 11751 against every reporting US ZIP.

ZIP code 11751 is a mid-sized community (a standard USPS delivery area) in Islip, Suffolk County, New York, home to 14,961 residents across 10.4 square miles, a density of 1,436 people per square mile, in the New York time zone.

ZIP 11751 skews affluent, with a median household income of $116,559 (26% above the New York average), while per-capita income is $51,520. Poverty here runs at 5.5%, with unemployment measured at 5.6%. Housing costs here run $563,100 for a typical home value (49% above the state average), with rent averaging $2,257 a month; 83.4% of homes are owner-occupied.

A solid share of residents have a four-year degree: 35.7% of adults hold a bachelor's degree or higher, the median age is 45.6, and the average commute is 28 minutes. Beyond these figures, 10 nearby ZIP codes within about 10 miles are surfaced below, along with 6 more sharing Suffolk County, letting you compare 11751 to its immediate surroundings rather than a national baseline alone.

Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →

Top industries in ZIP 11751

Top 5 sectors by establishment count in Islip, NY

Which industries have the most business establishments in ZIP 11751.

establishments

What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.

Source U.S. Census Bureau · ZIP Code Business Patterns (ZBP) As of 2023

Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 11751, Islip, NY · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.

Quick Facts

14,961

Population

10.4

Area (sq mi)

1,436

People / sq mi

New York

Time Zone

standard

ZIP Type

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 11751?

45.6

Median Age

48.7%

Male

51.3%

Female

7.7%

Foreign-Born

White 74.1%
African American 3.1%
Asian 6.4%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 10.0%
Hispanic or Latino 16.9%

Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How much do residents earn?

$116,559

Median Household Income

+26% vs state

$51,520

Per Capita Income

5.5%

Poverty Rate

5.6%

Unemployment Rate

27.5 min

Mean Commute Time

How ZIP 11751 ranks nationally

Islip, NY household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$116,559 Top 11% higher than 89% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). Below this entry. $100,000–$120,000: 2,855 US ZIPs (9%). This entry sits in this band. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What is the education profile here?

High School Graduate or Higher 63.0%
Bachelor's Degree or Higher 35.7%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

5,318

Total Housing Units

5,040

Occupied Units

278

Vacant Units

2.71

Avg Household Size

Occupancy Type

Owner 83.4%
Renter 16.6%

$563,100

Median Home Value

+49% vs state

$2,257

Median Rent

1965

Median Year Built

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

How have home values changed over time?

FHFA House Price Index, annual appreciation data based on repeat sales and appraisals

+10.4%

YoY Change (2024)

305

HPI Index (2000 = 100)

+205%

Total Change Since 2000

Home values in ZIP 11751 have increased 10.4% over the past year (2024). Since 2000, this ZIP has seen +205% cumulative appreciation.

Year Annual Change HPI Index
2020 +5.4% 211
2021 +10.5% 233
2022 +11.7% 261
2023 +5.9% 276
2024 +10.4% 305

Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2024. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 349 business establishments in ZIP 11751, employing approximately 3,416 people with a combined annual payroll of $184,522,000.

349

Businesses

3,416

Employees

$184.5M

Annual Payroll

15

Industry Sectors

Industry Establishments % of Total
Construction 55 15.8%
Other services (except public administration) 53 15.2%
Health care and social assistance 51 14.6%
Professional, scientific, and technical services 39 11.2%
Retail trade 33 9.5%
Accommodation and food services 28 8.0%
Administrative and support and waste management and remediation services 26 7.5%
Wholesale trade 14 4.0%
Real estate and rental and leasing 11 3.1%
Manufacturing 10 2.9%
Arts, entertainment, and recreation 10 2.9%
Finance and insurance 7 2.0%
Educational services 5 1.4%
Transportation and warehousing 3 0.9%
Information 3 0.9%

Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.

Nearby ZIP Codes

Want a side-by-side? Compare 11751 vs 11706 →

ZIP 11751 vs its nearest neighbors, by population

Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.

residents

What this shows Among its immediate neighbors, ZIP 11751 ranks #6 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 11751 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

median income

What this shows By household income, ZIP 11751 ranks #9 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
11706 Bay Shore, NY 62,543 2.0 mi
11730 East Islip, NY 14,712 2.3 mi
11739 Great River, NY 1,223 2.8 mi
11718 Brightwaters, NY 3,103 2.7 mi
11752 Islip Terrace, NY 9,531 2.8 mi
11722 Central Islip, NY 35,177 3.8 mi
11788 Hauppauge, NY 16,821 6.1 mi
11769 Oakdale, NY 9,506 4.4 mi
11717 Brentwood, NY 60,745 4.2 mi
11795 West Islip, NY 26,030 4.7 mi

More ZIP Codes in Suffolk County

11746 standard
Huntington Station, NY
Pop: 67,094
11706 standard
Bay Shore, NY
Pop: 62,543
11717 standard
Brentwood, NY
Pop: 60,745
11757 standard
Lindenhurst, NY
Pop: 45,700
11772 standard
Patchogue, NY
Pop: 44,837
11743 standard
Huntington, NY
Pop: 42,230

Related Areas

Suffolk County Islip, NY New York

Frequently Asked Questions

What county is ZIP code 11751 in? ▼
ZIP code 11751 (Islip) is located in Suffolk County, New York. Suffolk County contains multiple ZIP codes, see the full list at /counties/suffolk-ny.
What is the population of ZIP code 11751? ▼
ZIP code 11751 in Islip, NY has a population of 14,961 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 11751? ▼
The median household income in ZIP 11751 is $116,559, which is 53% above the national average of $76,288.
What is the average home value in ZIP 11751? ▼
The median home value in ZIP 11751 is $563,100, which is 102% above the national average of $278,155.
What is the demographic makeup of ZIP 11751? ▼
The largest racial group in ZIP 11751 is White at 74.1%. Hispanic or Latino residents make up 16.9% of the population.
How many businesses are in ZIP code 11751? ▼
ZIP code 11751 has 349 business establishments employing approximately 3,416 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 11751? ▼
The top industries by establishment count in ZIP 11751 are: Construction (55), Other services (except public administration) (53), Health care and social assistance (51). There are 15 industry sectors represented in total.
How have home values changed in ZIP code 11751? ▼
According to the FHFA House Price Index, home values in ZIP 11751 increased by 10.4% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 205%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 11751? ▼
In ZIP code 11751, 63.0% of residents aged 25+ have a high school diploma or higher, and 35.7% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 11751? ▼
The mean commute time for workers in ZIP code 11751 is 27.5 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 11751? ▼
In ZIP code 11751, approximately 83.4% of occupied housing units are owner-occupied and 16.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 11751? ▼
The poverty rate in ZIP code 11751 is 5.5% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.

Read our methodology to see how this data is sourced, computed, and verified.