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 High-density area
- $116,313
- Median income Above-median income area
- $477,400
- Median home value Above-median home value
- 32.5%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
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.
FHFA HPI release change
What changed in the latest House Price Index year
- FHFA House Price Index values in ZIP 11749 (Islandia, NY) rose +1.7% from 2023 to 2024. The all-transactions index moved from 267.4 in 2023 to 272.0 in 2024 (2000 = 100).
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 average New York ZIP), while per-capita income is $46,560. The poverty rate is 7.7%, with unemployment at 5.5%; those measures add context to the income figure. Housing is both higher-cost and owner-heavy: median home value is $477,400 (26% above the average New York ZIP), while 96.0% of occupied homes are owner-occupied and median rent is $2,019.
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. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Suffolk County, so 11749 can be compared with both its immediate and county-level context.
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.
- Professional, scientific, and technical services
Professional, scientific, and technical services
67 establishments
- Wholesale trade
Wholesale trade
57 establishments
- Construction
Construction
42 establishments
- Retail trade
Retail trade
40 establishments
- Health care and social assistance
Health care and social assistance
36 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, 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
Who lives in ZIP 11749?
43.3
Median Age
53.9%
Male
46.1%
Female
39.0%
Foreign-Born
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 ZIP avg
$46,560
Per Capita Income
7.7%
Poverty Rate
5.5%
Unemployment Rate
30.3 min
Mean Commute Time
How ZIP 11749 ranks among New York ZIPs
Islandia, NY household income vs. every New York ZIP code
Median household income among 1,626 reporting New York ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$116,313 Top 22% higher than 78% of 1,626 New York ZIPs
Each bar is a $20K-wide band; taller bars hold more New York 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?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
1,288housing units
1,288
Total Housing Units
1,217
Occupied Units
71
Vacant Units
2.86
Avg Household Size
Occupancy Type
$477,400
Median Home Value
+26% vs state ZIP avg
$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.
- 11779
Ronkonkoma (11779)
38,421 residents
- 11787
Smithtown (11787)
35,772 residents
- 11722
Central Islip (11722)
35,177 residents
- 11788
Hauppauge (11788)
16,821 residents
- 11780
Saint James (11780)
15,524 residents
- 11730 14,712
East Islip (11730)
14,712 residents
- 11767 14,530
Nesconset (11767)
14,530 residents
- 11716 10,700
Bohemia (11716)
10,700 residents
- 11752 9,531
Islip Terrace (11752)
9,531 residents
What this shows Among its immediate neighbors, ZIP 11749 ranks #0 by population - useful context the national average alone can't give.
ZIP 11749 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 11739
Great River (11739)
$164,286 median income
- 11767
Nesconset (11767)
$152,985 median income
- 11752
Islip Terrace (11752)
$151,917 median income
- 11788
Hauppauge (11788)
$149,726 median income
- 11730
East Islip (11730)
$145,652 median income
- 11780
Saint James (11780)
$144,577 median income
- 11787
Smithtown (11787)
$143,101 median income
- 11716
Bohemia (11716)
$128,889 median income
- 11749
Islandia (11749)
$116,313 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.
| 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 |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 11749, both outside NY so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (3,345 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Suffolk County
Related Areas
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.
Related
Take this with you
What to do with ZIP 11749's numbers, next.
- See how ZIP 11749 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Islandia, NY ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.