PlainZIP

Cold Spring Harbor, NY · standard

ZIP Code 11724

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

3,220
322/sq mi
$250,001
Median income
$1,641,000
Median home value
79.4%
Bachelor's or higher

The verdict

Cold Spring Harbor pairs a top-decile household income with top-decile home values, in a low-density, homeowner-dominated area.

Top 1%
household income, US ZIPs
Top 1%
home value, US ZIPs
322
people per sq mi
93%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 11724 against every reporting US ZIP.

ZIP code 11724 covers 10.0 square miles in Cold Spring Harbor, Suffolk County, New York (a standard USPS delivery area), with a modest 3,220 residents on file, a density of 322 people per square mile, in the New York time zone.

ZIP 11724 skews affluent, with a median household income of $250,001 (170% above the New York average), while per-capita income is $112,377. Poverty here runs at 2.3%, with unemployment measured at 1.0%. Housing costs here run $1,641,000 for a typical home value (334% above the state average), with rent averaging - a month; 92.7% of homes are owner-occupied.

This is a highly-educated ZIP: 79.4% of adults hold a bachelor's degree or higher, the median age is 41.5, and the average commute is 35 minutes. To put 11724 in local context, 10 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Suffolk County, for a geography-aware comparison.

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 11724

Top 5 sectors by establishment count in Cold Spring Harbor, NY

Which industries have the most business establishments in ZIP 11724.

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 11724, Cold Spring Harbor, 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

3,220

Population

10.0

Area (sq mi)

322

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 11724?

41.5

Median Age

52.0%

Male

48.0%

Female

7.9%

Foreign-Born

White 87.1%
African American 0.4%
Asian 4.5%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 5.2%
Hispanic or Latino 2.6%

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?

$250,001

Median Household Income

+170% vs state

$112,377

Per Capita Income

2.3%

Poverty Rate

1.0%

Unemployment Rate

34.9 min

Mean Commute Time

How ZIP 11724 ranks nationally

Cold Spring Harbor, NY household income vs. every US ZIP code

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

$250,001 Top 1% higher than 99% 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%). Below this entry. $160,000–$180,000: 364 US ZIPs (1%). Below this entry. $180,000–$200,000: 186 US ZIPs (1%). Below this entry. $200,000–$220,000: 324 US ZIPs (1%). This entry sits in this band. 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 85.8%
Bachelor's Degree or Higher 79.4%

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

What does housing look like?

1,068

Total Housing Units

1,017

Occupied Units

51

Vacant Units

2.92

Avg Household Size

Occupancy Type

Owner 92.7%
Renter 7.3%

$1,641,000

Median Home Value

+334% vs state

1961

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

-8.8%

YoY Change (2023)

173

HPI Index (2000 = 100)

+73%

Total Change Since 2000

Home values in ZIP 11724 have decreased 8.8% over the past year (2023). Since 2000, this ZIP has seen +73% cumulative appreciation.

Year Annual Change HPI Index
2018 +2.6% 156
2020 – 166
2021 -0.7% 165
2022 +14.8% 190
2023 -8.8% 173

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 2023. ZIP codes with few transactions may show missing values.

What businesses operate in this ZIP?

Census Bureau data shows 131 business establishments in ZIP 11724, employing approximately 1,375 people with a combined annual payroll of $118,891,000.

131

Businesses

1,375

Employees

$118.9M

Annual Payroll

12

Industry Sectors

Industry Establishments % of Total
Professional, scientific, and technical services 21 16.0%
Construction 19 14.5%
Retail trade 12 9.2%
Real estate and rental and leasing 12 9.2%
Other services (except public administration) 12 9.2%
Health care and social assistance 11 8.4%
Finance and insurance 10 7.6%
Wholesale trade 8 6.1%
Arts, entertainment, and recreation 7 5.3%
Accommodation and food services 6 4.6%
Administrative and support and waste management and remediation services 5 3.8%
Educational services 3 2.3%

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 11724 vs 11743 →

ZIP 11724 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 11724 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 11724 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 11724 ranks the highest 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
11743 Huntington, NY 42,230 1.8 mi
11797 Woodbury, NY 9,041 3.4 mi
11771 Oyster Bay, NY 10,007 3.8 mi
11791 Syosset, NY 25,076 3.7 mi
11740 Greenlawn, NY 9,454 4.8 mi
11803 Plainview, NY 28,127 5.9 mi
11732 East Norwich, NY 3,430 4.6 mi
11804 Old Bethpage, NY 5,010 7.4 mi
11721 Centerport, NY 6,292 4.8 mi
11765 Mill Neck, NY 737 5.6 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 Cold Spring Harbor, NY New York

Frequently Asked Questions

What county is ZIP code 11724 in? ▼
ZIP code 11724 (Cold Spring Harbor) 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 11724? ▼
ZIP code 11724 in Cold Spring Harbor, NY has a population of 3,220 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 11724? ▼
The median household income in ZIP 11724 is $250,001, which is 228% above the national average of $76,288.
What is the average home value in ZIP 11724? ▼
The median home value in ZIP 11724 is $1,641,000, which is 490% above the national average of $278,155.
What is the demographic makeup of ZIP 11724? ▼
The largest racial group in ZIP 11724 is White at 87.1%. Hispanic or Latino residents make up 2.6% of the population.
How many businesses are in ZIP code 11724? ▼
ZIP code 11724 has 131 business establishments employing approximately 1,375 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 11724? ▼
The top industries by establishment count in ZIP 11724 are: Professional, scientific, and technical services (21), Construction (19), Retail trade (12). There are 12 industry sectors represented in total.
How have home values changed in ZIP code 11724? ▼
According to the FHFA House Price Index, home values in ZIP 11724 decreased by 8.8% in 2023. Since 2000, home values in this ZIP have appreciated by approximately 73%. 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 11724? ▼
In ZIP code 11724, 85.8% of residents aged 25+ have a high school diploma or higher, and 79.4% 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 11724? ▼
The mean commute time for workers in ZIP code 11724 is 34.9 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 11724? ▼
In ZIP code 11724, approximately 92.7% of occupied housing units are owner-occupied and 7.3% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 11724? ▼
The poverty rate in ZIP code 11724 is 2.3% 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.