Cold Spring Harbor ZIP Code List — Suffolk County, NY

There is one unique ZIP code in Cold Spring Harbor, New York and it is 11724. Area code: 516/631.
1
ZIP codes
3.86
sq mi land
0.49
sq mi water
516/631
area code
Cold Spring Harbor, NY ZIP code map

About Cold Spring Harbor, NY

Cold Spring Harbor, NY is a charming coastal village located in Suffolk County, New York. Known for its scenic beauty and rich history, this picturesque area offers a juxtaposition of natural landscapes and a quaint community. The town is a vibrant hub for education and research, particularly with the nearby Cold Spring Harbor Laboratory.

Location & geography

Cold Spring Harbor is situated on the North Shore of Long Island, approximately 35 miles east of New York City. The village covers a land area of 3.86 square miles and features a water area of 0.49 square miles, blending serene landscapes with a quaint village atmosphere. Nearby cities include Huntington, located about 5 miles to the west, and Northport, approximately 7 miles to the south.

Community & economy

The community of Cold Spring Harbor exudes a small-town charm, characterized by its historic homes and local boutiques. Industries in the area are diverse, with a strong focus on education, research, and tourism. Daily life in the village is enhanced by its beautiful waterfront, parks, and recreational activities that attract both residents and visitors alike.

Transportation

Cold Spring Harbor is accessible via several major highways, with Route 25A running through the village. The nearest named airports are Long Island MacArthur Airport and John F. Kennedy International Airport, offering convenient travel options for residents and visitors. While public transit options are limited, the Long Island Rail Road provides service to nearby stations, connecting the community to broader Long Island and New York City.

History

Cold Spring Harbor was initially settled in the 17th century and has since evolved into a significant center for research and education. Key industries historically include fishing and agriculture, transitioning over time to focus more on science and education, largely due to the establishment of Cold Spring Harbor Laboratory in the 19th century. The village has witnessed several notable events that have shaped its development and cultural identity.

Did you know?

One surprising fact about Cold Spring Harbor is that it is home to the renowned Cold Spring Harbor Laboratory, which has contributed significantly to advancements in biomedical research. Additionally, the village's main street features charming historic buildings that date back to its founding, enhancing its picturesque appeal.

ZIP codes for Cold Spring Harbor, NY (1)
ZIP code City County Map
11724 Cold Spring Harbor Suffolk View map

Demographics & statistics

2,874
Population
38.5
Median age
$250,001
Median household income
$92,315
Per capita income
$1,480,400
Median home value
$0
Median monthly rent
96.8%
Home ownership
2.0%
Poverty rate
2.4%
Unemployment
1,011
Housing units
80.4%
Bachelor's or higher

Age distribution

Male Female
129
Under 5
112
149
5–9
129
96
10–14
82
126
15–19
108
78
20–24
67
139
25–34
119
149
35–44
128
245
45–54
211
123
55–59
106
102
60–64
88
136
65–74
117
54
75–84
46
19
85+
16
← Male
Female →

Age summary

GroupCount%
Under 1886029.9%
18 and over2,01470.1%
65 and over38813.5%
Median age38.5 years

Race & ethnicity

White 82%
Two or more races 6.9%
Hispanic or Latino 5.3%
Other race 3.1%
Asian 2.8%
GroupCount%
White2,48882%
Two or more races2096.9%
Hispanic or Latino1615.3%
Other race933.1%
Asian842.8%

Household income

Under $10k 3.5%
$15k–$25k 0.6%
$25k–$35k 1.6%
$35k–$50k 2.4%
$50k–$75k 10.1%
$75k–$100k 1.1%
$100k–$150k 7.8%
$150k–$200k 13.3%
$200k+ 59.6%
Range% of households
Under $10k3.5%
$15k–$25k0.6%
$25k–$35k1.6%
$35k–$50k2.4%
$50k–$75k10.1%
$75k–$100k1.1%
$100k–$150k7.8%
$150k–$200k13.3%
$200k+59.6%
Median income$250,001

Housing

Home values

$300k–$500k 1.2%
$500k–$1M 12.6%
$1M+ 86.3%

Housing overview

MetricValue
Median home value$1,480,400
Median rent / month$0
Owner occupied96.8%
Renter occupied3.2%
Vacant7.6%
Single-family detached94.3%
Large apartment buildings0.0%
Mobile homes0.0%
Median rooms10.0
Avg household size (owned)2.95

Year built

Era%
2020 or later0.0%
2010–20191.7%
2000–20092.5%
1990–199910.1%
1980–19894.5%
1970–197910.3%
1960–196917.1%
1950–195921.2%
1940–19492.0%
1939 or earlier30.6%

Bedrooms

Size% of units
No bedroom (studio)1.2%
1 bedroom0.0%
2 bedrooms4.0%
3 bedrooms29.6%
4 bedrooms37.7%
5+ bedrooms27.4%

Vehicles per household

Vehicles% of households
No vehicle6.1%
1 vehicle16.4%
2 vehicles41.3%
3 or more36.1%

Heating fuel

Fuel type%
Utility gas41.4%
Electricity2.1%
Propane / LP gas1.9%
Fuel oil54.6%

Households & families

Household typeCount%
Married-couple family68571.1%
Cohabiting couple00.0%
Male householder, no spouse13914.4%
Female householder, no spouse13914.4%
Households with children under 1846047.8%
Households with seniors (65+)30231.4%
Average household size2.89

Marital status

StatusMaleFemale
Never married25.8%18.4%
Married63.9%67.2%
Separated3.4%2.1%
Widowed3.4%7.7%
Divorced3.5%4.7%

Education

Less than 9th grade 2.8%
Some HS, no diploma 0.6%
HS graduate 6.3%
Some college, no degree 6.8%
Associate's degree 3.2%
Bachelor's degree 39.3%
Graduate / professional 41.1%
Metric%
HS diploma or higher96.6%
Bachelor's or higher80.4%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool12513.2%
Kindergarten879.2%
Elementary school34736.8%
High school19821.0%
College / grad school18719.8%

Employment

Industry of employment

Education & healthcare 26.6%
Finance & real estate 18.0%
Professional & management 16.7%
Construction 6.3%
Retail trade 6.3%
Transportation & utilities 5.2%
Arts, food & hospitality 5.1%
Manufacturing 4.1%
Information 4.0%
Wholesale trade 3.2%
Agriculture & mining 2.3%
Other services 1.7%
Public administration 0.5%

Occupation

Category%
Management, business & arts68.8%
Service5.9%
Sales & office20.1%
Natural resources & construction3.9%
Production & transportation1.4%

Employment type

Type%
Private sector86.1%
Government8.2%
Self-employed5.7%
Unpaid family workers0.0%

Commute

Method%
Drive alone48.7%
Carpool2.7%
Public transit15.5%
Walk2.6%
Other means4.5%
Avg commute (minutes)37.9

Poverty

All people 2.0%
Under 18 years 0.1%
18 and over 2.8%
Married-couple families 0.4%
Female-led households 0.0%

Income support

Source% of households
Social Security21.2%
Retirement income17.5%
Supplemental Security0.9%
Cash public assistance0.0%
Food stamps / SNAP3.6%

Health indicators

Condition%
High blood pressure26.3%
High cholesterol31.7%
Heart disease4.6%
Stroke1.9%
Asthma8.8%
Arthritis18.8%
Kidney disease2.2%
Pulmonary disease4.0%
Cancer7.2%
Behavior / access%
Binge drinking17.9%
No physical activity15.5%
Less than 7 hrs sleep30.1%
Fair or poor health7.1%
Poor mental health10.9%
Poor physical health6.6%
No health insurance5.9%
Visited doctor (checkup)79.6%
Visited dentist78.4%
Cholesterol screening94.7%
Teeth loss6.0%

Veterans & disability

VeteransCount%
Civilian veterans683.4%
Disability%
Any disability1.7%
Under 180.0%
18–64 years2.7%
65 and over1.3%

Health insurance coverage

Type%
Private insurance92.9%
Public insurance14.7%
Uninsured under 190.0%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only2,63391.6%
Spanish602.3%
Other Indo-European70.3%
Asian & Pacific Islander532.0%
Other languages00.0%

Place of birth & citizenship

OriginCount%
Native born (US)2,68293.3%
Born in same state2,64792.1%
Born in different state2,10273.1%
Foreign born351.2%
Naturalized citizen1926.7%
Not a US citizen11760.9%

Ancestry

AncestryCount%
Italian70224.4%
French31210.9%
English592.1%
Arab541.9%
AncestryCount%
Irish180.6%
Norwegian70.2%
Polish30.1%

Technology access

Metric% of households
Computer access33.5%
Internet access98.4%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Frequently asked questions
What is the ZIP code for Cold Spring Harbor, NY?
Cold Spring Harbor, NY has one ZIP code: 11724.
What is the main ZIP code for Cold Spring Harbor, NY?
The primary ZIP code for Cold Spring Harbor, NY is 11724. The city uses area code 516 or 631 for phone service.
What county is Cold Spring Harbor, NY in?
Cold Spring Harbor is located in Suffolk County, New York.
How many ZIP codes are in Cold Spring Harbor, NY?
Cold Spring Harbor, NY has 1 ZIP code.
What ZIP code covers the Cold Spring Harbor Laboratory area on the North Shore of Long Island?
The Cold Spring Harbor Laboratory, a world-renowned research institution, is located in ZIP code 11724, which serves the entire Cold Spring Harbor community.
What is the ZIP code for downtown Cold Spring Harbor near the harbor waterfront and Main Street?
Downtown Cold Spring Harbor, including the areas around the harbor and Main Street, uses the ZIP code 11724 for all mail and address purposes.
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