ZIP Code 11740
standardSource:
Greenlawn · Suffolk County · New York
- Population
- 9,454
- Median income
- $152,386
- Median home value
- $693,700
- Bachelor's or higher
- 54.2%
- Land area
- 9.6 sq mi
984/sq mi
▲ 100% vs US
higher than 96% of US ZIPs
▲ 149% vs US
higher than 94% of US ZIPs
Median age 44.5
New York
ZIP code 11740 in Greenlawn, New York has a population of 9,454. The median household income is $152,386, which is 100% above the national average. Median home value is $693,700, 149% above the US average. 54.2% of residents hold a bachelor's degree or higher.
ZIP code 11740 is classified by USPS as a standard delivery area and covers roughly 9.6 square miles in Greenlawn, Suffolk County, New York. The area is home to 9,454 residents, producing a population density of 984 people per square mile, and falls within the New York time zone. These USPS and Census boundary values drive every downstream statistic on this page, including the benchmarks that compare 11740 against New York and the nation.
On the economic side, the median household income for ZIP 11740 sits at $152,386 (65% above the New York average), while per-capita income is $64,810. The poverty rate stands at 6.9% and the unemployment rate at 2.6%. On housing, the median home value is $693,700 (83% above the state average) with median rent at $684 per month, and 81.8% of occupied units are owner-occupied, a direct signal of whether 11740 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 54.2% of adults hold a bachelor's degree or higher, the median age is 44.5, and the average commute is 35 minutes. We also surface 10 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing Suffolk County, so you can benchmark 11740 against its immediate geography rather than a national average alone. Every figure is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates, HUD Fair Market Rents, and FHFA Home Price Index data, no estimates, no proprietary scoring. Verify with HUD →
Top industries in ZIP 11740
Top 5 sectors by establishment count
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 + HUD FMR + FHFA HPI ACS demographics, ZBP business establishments, HUD Fair Market Rents, 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; HUD FMR + 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
$64,810
Per Capita Income
6.9%
Poverty Rate
2.6%
Unemployment Rate
34.8 min
Mean Commute Time
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?
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
$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 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 |
More ZIP Codes in Suffolk County
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Frequently Asked Questions
What county is ZIP code 11740 in? ▼
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How many businesses are in ZIP code 11740? ▼
What are the main industries in ZIP code 11740? ▼
How have home values changed in ZIP code 11740? ▼
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What is the average commute time in ZIP 11740? ▼
What percentage of residents own vs. rent in ZIP 11740? ▼
What is the poverty rate in ZIP code 11740? ▼
ZIP Code Research Guides
Official Data Resources for Greenlawn, NY
Verify and explore additional data for this area using these official government sources.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023). Business data: Source: Census ZIP Code Business Patterns (ZBP) 2023. Home value trends: Source: FHFA House Price Index (HPI), Five-Digit ZIP Codes.
PlainZIP is not affiliated with the U.S. Census Bureau or any government agency.
Read our methodology , how this data is sourced, computed, and verified.