Greenlawn, NY · standard
ZIP Code 11740
Suffolk County, New York - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 9,454
- 984/sq mi High-density area
- $152,386
- Median income Above-median income area
- $693,700
- Median home value Above-median home value
- 54.2%
- Bachelor's or higher Above-average bachelor's attainment
National ZIP placement
Greenlawn pairs a top-decile household income with top-decile home values, in a low-density, homeowner-dominated area.
- Top 4%
- household income, US ZIPs
- Top 6%
- home value, US ZIPs
- 984
- people per sq mi
- 82%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 11740 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 11740 (Greenlawn, NY) rose +5.9% from 2023 to 2024. The all-transactions index moved from 261.6 in 2023 to 277.0 in 2024 (2000 = 100).
ZIP code 11740 is a mid-sized community (a standard USPS delivery area) in Greenlawn, Suffolk County, New York, home to 9,454 residents across 9.6 square miles, a density of 984 people per square mile, in the New York time zone.
ZIP 11740 skews affluent, with a median household income of $152,386 (65% above the average New York ZIP), while per-capita income is $64,810. Both reported hardship measures are comparatively low in absolute terms: poverty is 6.9% and unemployment is 2.6%. Housing is both higher-cost and owner-heavy: median home value is $693,700 (83% above the average New York ZIP), while 81.8% of occupied homes are owner-occupied and median rent is $684.
This is a highly-educated ZIP: 54.2% of adults hold a bachelor's degree or higher, the median age is 44.5, and the average commute is 35 minutes. The page also surfaces 10 ZIP codes within roughly 10 miles and 6 more in Suffolk County, so 11740 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 11740
Top 5 sectors by establishment count in Greenlawn, NY
Which industries have the most business establishments in ZIP 11740.
- Construction
Construction
40 establishments
- Professional, scientific, and technical services
Professional, scientific, and technical services
39 establishments
- Other services (except public administration)
Other services (except public administration)
29 establishments
- Administrative and support and waste management and remediation services
Administrative and support and waste management and remediation services
27 establishments
- Health care and social assistance
Health care and social assistance
24 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 11740, Greenlawn, 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
9,454
Population
9.6
Area (sq mi)
984
People / sq mi
New York
Time Zone
standard
ZIP Type
Who lives in ZIP 11740?
44.5
Median Age
46.9%
Male
53.1%
Female
11.7%
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?
$152,386
Median Household Income
+65% vs state ZIP avg
$64,810
Per Capita Income
6.9%
Poverty Rate
2.6%
Unemployment Rate
34.8 min
Mean Commute Time
How ZIP 11740 ranks among New York ZIPs
Greenlawn, 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)
$152,386 Top 8% higher than 92% 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
3,586housing units
3,586
Total Housing Units
3,572
Occupied Units
14
Vacant Units
2.78
Avg Household Size
Occupancy Type
$693,700
Median Home Value
+83% vs state ZIP avg
$684
Median Rent
1964
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
+5.9%
YoY Change (2024)
277
HPI Index (2000 = 100)
+177%
Total Change Since 2000
Home values in ZIP 11740 have increased 5.9% over the past year (2024). Since 2000, this ZIP has seen +177% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2020 | +3.1% | 191 |
| 2021 | +7.7% | 206 |
| 2022 | +11.4% | 229 |
| 2023 | +14.1% | 262 |
| 2024 | +5.9% | 277 |
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 263 business establishments in ZIP 11740, employing approximately 2,406 people with a combined annual payroll of $168,403,000.
263
Businesses
2,406
Employees
$168.4M
Annual Payroll
14
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 40 | 15.2% |
| Professional, scientific, and technical services | 39 | 14.8% |
| Other services (except public administration) | 29 | 11.0% |
| Administrative and support and waste management and remediation services | 27 | 10.3% |
| Health care and social assistance | 24 | 9.1% |
| Accommodation and food services | 22 | 8.4% |
| Retail trade | 21 | 8.0% |
| Finance and insurance | 19 | 7.2% |
| Wholesale trade | 9 | 3.4% |
| Real estate and rental and leasing | 9 | 3.4% |
| Educational services | 7 | 2.7% |
| Arts, entertainment, and recreation | 5 | 1.9% |
| Manufacturing | 3 | 1.1% |
| Information | 3 | 1.1% |
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 11740 vs 11721 →
ZIP 11740 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 11746
Huntington Station (11746)
67,094 residents
- 11743
Huntington (11743)
42,230 residents
- 11731
East Northport (11731)
30,184 residents
- 11725
Commack (11725)
29,150 residents
- 11768 21,902
Northport (11768)
21,902 residents
- 11747 19,803
Melville (11747)
19,803 residents
- 11754 18,958
Kings Park (11754)
18,958 residents
- 11798 15,347
Wyandanch (11798)
15,347 residents
- 11740 9,454
Greenlawn (11740)
9,454 residents
What this shows Among its immediate neighbors, ZIP 11740 ranks #9 by population - useful context the national average alone can't give.
ZIP 11740 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 11724
Cold Spring Harbor (11724)
$250,000 median income
- 11721
Centerport (11721)
$197,179 median income
- 11743
Huntington (11743)
$183,187 median income
- 11768
Northport (11768)
$172,570 median income
- 11725
Commack (11725)
$168,281 median income
- 11746
Huntington Station (11746)
$164,589 median income
- 11731
East Northport (11731)
$161,132 median income
- 11747
Melville (11747)
$159,540 median income
- 11740
Greenlawn (11740)
$152,386 median income
What this shows By household income, ZIP 11740 ranks #9 of 9 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
| ZIP Code | City | Population | Distance |
|---|---|---|---|
| 11721 | Centerport, NY | 6,292 | 2.0 mi |
| 11731 | East Northport, NY | 30,184 | 2.3 mi |
| 11746 | Huntington Station, NY | 67,094 | 3.5 mi |
| 11768 | Northport, NY | 21,902 | 3.6 mi |
| 11743 | Huntington, NY | 42,230 | 3.6 mi |
| 11724 | Cold Spring Harbor, NY | 3,220 | 4.8 mi |
| 11725 | Commack, NY | 29,150 | 4.5 mi |
| 11798 | Wyandanch, NY | 15,347 | 7.8 mi |
| 11747 | Melville, NY | 19,803 | 6.2 mi |
| 11754 | Kings Park, NY | 18,958 | 6.2 mi |
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 11740, 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 (9,454 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 11740 in?
ZIP code 11740 (Greenlawn) 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 11740?
ZIP code 11740 in Greenlawn, NY has a population of 9,454 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 11740?
The median household income in ZIP 11740 is $152,386, which is 100% above the national average of $76,288.
What is the average home value in ZIP 11740?
The median home value in ZIP 11740 is $693,700, which is 149% above the national average of $278,155.
What is the demographic makeup of ZIP 11740?
The largest racial group in ZIP 11740 is White at 74.6%. Hispanic or Latino residents make up 9.9% of the population.
How many businesses are in ZIP code 11740?
ZIP code 11740 has 263 business establishments employing approximately 2,406 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 11740?
The top industries by establishment count in ZIP 11740 are: Construction (40), Professional, scientific, and technical services (39), Other services (except public administration) (29). There are 14 industry sectors represented in total.
How have home values changed in ZIP code 11740?
According to the FHFA House Price Index, home values in ZIP 11740 increased by 5.9% in 2024. Since 2000, home values in this ZIP have appreciated by approximately 177%. 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 11740?
In ZIP code 11740, 75.4% of residents aged 25+ have a high school diploma or higher, and 54.2% 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 11740?
The mean commute time for workers in ZIP code 11740 is 34.8 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 11740?
In ZIP code 11740, approximately 81.8% of occupied housing units are owner-occupied and 18.2% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 11740?
The poverty rate in ZIP code 11740 is 6.9% 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 11740's numbers, next.
- See how ZIP 11740 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Greenlawn, 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.