PlainZIP

Islandia, NY · standard

ZIP Code 11749

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

3,345
592/sq mi
$116,313
Median income
$477,400
Median home value
32.5%
Bachelor's or higher

The verdict

Islandia 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 14%
home value, US ZIPs
592
people per sq mi
96%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 11749 against every reporting US ZIP.

ZIP code 11749 covers 5.7 square miles in Islandia, Suffolk County, New York (a standard USPS delivery area), with a modest 3,345 residents on file, a density of 592 people per square mile, in the New York time zone.

ZIP 11749 skews affluent, with a median household income of $116,313 (26% above the New York average), while per-capita income is $46,560. 7.7% of residents live below the poverty line, and the unemployment rate reads 5.5%. The typical home here is valued at $477,400 (26% above the state average); renters pay a median of $2,019 monthly, and 96.0% of units are owner-occupied.

A solid share of residents have a four-year degree: 32.5% of adults hold a bachelor's degree or higher, the median age is 43.3, and the average commute is 30 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Suffolk County, so you can benchmark 11749 against its immediate geography rather than a national average 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 11749

Top 5 sectors by establishment count in Islandia, NY

Which industries have the most business establishments in ZIP 11749.

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 11749, Islandia, 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

3,345

Population

5.7

Area (sq mi)

592

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 11749?

43.3

Median Age

53.9%

Male

46.1%

Female

39.0%

Foreign-Born

White 33.6%
African American 17.9%
Asian 6.3%
American Indian or Alaska Native 2.2%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 14.9%
Hispanic or Latino 32.0%

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?

$116,313

Median Household Income

+26% vs state

$46,560

Per Capita Income

7.7%

Poverty Rate

5.5%

Unemployment Rate

30.3 min

Mean Commute Time

How ZIP 11749 ranks nationally

Islandia, NY household income vs. every US ZIP code

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

$116,313 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 60.3%
Bachelor's Degree or Higher 32.5%

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

What does housing look like?

1,288

Total Housing Units

1,217

Occupied Units

71

Vacant Units

2.86

Avg Household Size

Occupancy Type

Owner 96.0%
Renter 4.0%

$477,400

Median Home Value

+26% vs state

$2,019

Median Rent

1969

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

+1.7%

YoY Change (2024)

272

HPI Index (2000 = 100)

+172%

Total Change Since 2000

Home values in ZIP 11749 have increased 1.7% over the past year (2024). Since 2000, this ZIP has seen +172% cumulative appreciation.

Year Annual Change HPI Index
2020 -1.3% 202
2021 +9.7% 222
2022 +22.8% 272
2023 -1.7% 267
2024 +1.7% 272

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 399 business establishments in ZIP 11749, employing approximately 8,492 people with a combined annual payroll of $550,788,000.

399

Businesses

8,492

Employees

$550.8M

Annual Payroll

16

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 67 16.8%
Wholesale trade 57 14.3%
Construction 42 10.5%
Retail trade 40 10.0%
Health care and social assistance 36 9.0%
Finance and insurance 30 7.5%
Administrative and support and waste management and remediation services 30 7.5%
Manufacturing 20 5.0%
Real estate and rental and leasing 17 4.3%
Other services (except public administration) 16 4.0%
Accommodation and food services 15 3.8%
Transportation and warehousing 12 3.0%
Information 5 1.3%
Arts, entertainment, and recreation 5 1.3%
Educational services 4 1.0%
Management of companies and enterprises 3 0.8%

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 11749 vs 11722 →

ZIP 11749 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 11749 ranks #0 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 11749 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 11749 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
11722 Central Islip, NY 35,177 2.1 mi
11788 Hauppauge, NY 16,821 2.4 mi
11752 Islip Terrace, NY 9,531 3.5 mi
11779 Ronkonkoma, NY 38,421 2.9 mi
11767 Nesconset, NY 14,530 2.9 mi
11716 Bohemia, NY 10,700 3.4 mi
11787 Smithtown, NY 35,772 3.8 mi
11780 Saint James, NY 15,524 5.9 mi
11739 Great River, NY 1,223 5.4 mi
11730 East Islip, NY 14,712 6.2 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 Islandia, NY New York

Frequently Asked Questions

What county is ZIP code 11749 in? ▼
ZIP code 11749 (Islandia) 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 11749? ▼
ZIP code 11749 in Islandia, NY has a population of 3,345 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 11749? ▼
The median household income in ZIP 11749 is $116,313, which is 52% above the national average of $76,288.
What is the average home value in ZIP 11749? ▼
The median home value in ZIP 11749 is $477,400, which is 72% above the national average of $278,155.
What is the demographic makeup of ZIP 11749? ▼
The largest racial group in ZIP 11749 is White at 33.6%. Hispanic or Latino residents make up 32.0% of the population.
How many businesses are in ZIP code 11749? ▼
ZIP code 11749 has 399 business establishments employing approximately 8,492 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 11749? ▼
The top industries by establishment count in ZIP 11749 are: Professional, scientific, and technical services (67), Wholesale trade (57), Construction (42). There are 16 industry sectors represented in total.
How have home values changed in ZIP code 11749? ▼
According to the FHFA House Price Index, home values in ZIP 11749 increased by 1.7% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 172%. 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 11749? ▼
In ZIP code 11749, 60.3% of residents aged 25+ have a high school diploma or higher, and 32.5% 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 11749? ▼
The mean commute time for workers in ZIP code 11749 is 30.3 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 11749? ▼
In ZIP code 11749, approximately 96.0% of occupied housing units are owner-occupied and 4.0% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 11749? ▼
The poverty rate in ZIP code 11749 is 7.7% 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.