ZIP Code 11724
standardSource:
Cold Spring Harbor · Suffolk County · New York
- Population
- 3,220
- Median income
- $250,001
- Median home value
- $1,641,000
- Bachelor's or higher
- 79.4%
- Land area
- 10.0 sq mi
322/sq mi
▲ 228% vs US
higher than 100% of US ZIPs
▲ 490% vs US
higher than 99% of US ZIPs
Median age 41.5
New York
ZIP code 11724 in Cold Spring Harbor, New York has a population of 3,220. The median household income is $250,001, which is 228% above the national average. Median home value is $1,641,000, 490% above the US average. 79.4% of residents hold a bachelor's degree or higher.
ZIP code 11724 is classified by USPS as a standard delivery area and covers roughly 10.0 square miles in Cold Spring Harbor, Suffolk County, New York. The area is home to 3,220 residents, producing a population density of 322 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 11724 against New York and the nation.
On the economic side, the median household income for ZIP 11724 sits at $250,001 (170% above the New York average), while per-capita income is $112,377. The poverty rate stands at 2.3% and the unemployment rate at 1.0%. On housing, the median home value is $1,641,000 (334% above the state average) with median rent at — per month, and 92.7% of occupied units are owner-occupied, a direct signal of whether 11724 behaves more like a homeowner neighborhood or a renter-heavy ZIP.
Education and household profile round out the picture: 79.4% of adults hold a bachelor's degree or higher, the median age is 41.5, 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 11724 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 11724
Top 5 sectors by establishment count
Which industries have the most business establishments in ZIP 11724.
- Professional, scientific, and technical services
Professional, scientific, and technical services
21 establishments
- Construction
Construction
19 establishments
- Retail trade
Retail trade
12 establishments
- Real estate and rental and leasing
Real estate and rental and leasing
12 establishments
- Other services (except public administration)
Other services (except public administration)
12 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 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; HUD FMR + 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
Who lives in ZIP 11724?
41.5
Median Age
52.0%
Male
48.0%
Female
7.9%
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?
$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
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?
1,068
Total Housing Units
1,017
Occupied Units
51
Vacant Units
2.92
Avg Household Size
Occupancy Type
$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 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
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Frequently Asked Questions
What county is ZIP code 11724 in? ▼
What is the population of ZIP code 11724? ▼
What is the median household income in ZIP 11724? ▼
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How many businesses are in ZIP code 11724? ▼
What are the main industries in ZIP code 11724? ▼
How have home values changed in ZIP code 11724? ▼
What is the education level in ZIP code 11724? ▼
What is the average commute time in ZIP 11724? ▼
What percentage of residents own vs. rent in ZIP 11724? ▼
What is the poverty rate in ZIP code 11724? ▼
ZIP Code Research Guides
Official Data Resources for Cold Spring Harbor, 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.