PlainZIP

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
$152,386
Median income
$693,700
Median home value
54.2%
Bachelor's or higher

The verdict

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.

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 New York average), while per-capita income is $64,810. Local economic indicators show a 6.9% poverty rate alongside 2.6% unemployment. The typical home here is valued at $693,700 (83% above the state average); renters pay a median of $684 monthly, and 81.8% of units are owner-occupied.

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. A geography-based comparison follows: 10 ZIP codes within about 10 miles of 11740, plus 6 more within Suffolk County, give a clearer read than the 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 11740

Top 5 sectors by establishment count in Greenlawn, NY

Which industries have the most business establishments in ZIP 11740.

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 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

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 11740?

44.5

Median Age

46.9%

Male

53.1%

Female

11.7%

Foreign-Born

White 74.6%
African American 9.4%
Asian 3.6%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 7.8%
Hispanic or Latino 9.9%

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?

$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

How ZIP 11740 ranks nationally

Greenlawn, NY household income vs. every US ZIP code

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

$152,386 Top 4% higher than 96% 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%). Below this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Below this entry. $140,000–$160,000: 686 US ZIPs (2%). This entry sits in this band. $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 75.4%
Bachelor's Degree or Higher 54.2%

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

Owner 81.8%
Renter 18.2%

$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 11740 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 11740 ranks #9 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 11740 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 11740 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
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

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 Greenlawn, NY New York

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.

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