11579 ZIP Code — Sea Cliff, NY

Nassau County, New York

ZIP code 11579 is located in Sea Cliff, New York, within Nassau County. It covers approximately 1.11 square miles and serves a population of 5,062 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 516.

About ZIP code 11579

The housing stock consists of predominantly single-family detached homes. Most homes were built in the pre-1940, giving the area an established character. Median home value is $898,700. Owner-occupancy is high at 82%, well above the national average.

The gap between median ($181,375) and mean household income suggests income inequality — a small number of higher earners pull the average up. 34% of households receive Social Security income, suggesting a notable retiree or disability population.

The dominant occupation class is management, business, and professional, with education and healthcare as the leading industry. An above-average commute of 36 minutes suggests many residents work outside the immediate area.

Educational attainment is high — 60% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 11579 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.

5,062

population

1.11

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

11579 ZIP code map

Cities in ZIP code 11579

Below are the cities the US Postal Service accepts for ZIP code 11579. Using any city not on this list may result in mail delivery delays.

City	Status
Sea Cliff	Preferred

Nearby ZIP codes

11548 Greenvale (2.3 mi) 11542 Glen Cove (2.3 mi) 11050 Port Washington (2.7 mi) 11545 Glen Head (3 mi) 11054 Port Washington (3.2 mi) 11052 Port Washington (3.2 mi) 11051 Port Washington (3.2 mi) 11055 Port Washington (3.2 mi) 11053 Port Washington (3.2 mi) 11576 Roslyn (3.5 mi) 11560 Locust Valley (3.5 mi) 11030 Manhasset (4.1 mi)

Demographics updated 05/2026

Population
Total population	5,062
Population density	4,560 / sq mi
State FIPS	36
County FIPS	059

Geography
Land area	1.11 sq mi
Water area	0.00 sq mi
Latitude	40.8443
Longitude	-73.6433
Timezone	Eastern (ET)
Area code	516

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	16.9%	20.1%	37.0%
$50k – $100k	11.8%	21.8%	27.0%
$100k – $200k	32.6%	33.1%	24.4%
Over $200k	38.7%	25.0%	11.5%

Demographics & statistics

5,062

Population

4,560

People per sq mi

42.7

Median age

$181,375

Median household income

$103,104

Per capita income

$898,700

Median home value

$2,233

Median monthly rent

82.3%

Home ownership

2.0%

Poverty rate

12.2%

Unemployment

1,673

Housing units

59.8%

Bachelor's or higher

Age distribution

Male Female

139

Under 5

177

256

5–9

326

120

10–14

152

15–19

117

20–24

106

140

25–34

177

310

35–44

394

380

45–54

484

55–59

123

178

60–64

227

259

65–74

329

122

75–84

156

85+

← Male

Female →

Age summary

Group	Count	%
Under 18	1,322	26.1%
18 and over	3,740	73.9%
65 and over	985	19.5%
Median age	42.7 years

Race & ethnicity

White 86.6%

Hispanic or Latino 5.5%

Two or more races 4.9%

Other race 1.3%

Asian 1%

Black or African American 0.7%

Group	Count	%
White	4,638	86.6%
Hispanic or Latino	294	5.5%
Two or more races	263	4.9%
Other race	69	1.3%
Asian	52	1%
Black or African American	40	0.7%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	16.9%	20.1%	37.0%
$50k – $100k	11.8%	21.8%	27.0%
$100k – $200k	32.6%	33.1%	24.4%
Over $200k	38.7%	25.0%	11.5%

Under $10k 1.1%

$15k–$25k 5.7%

$25k–$35k 2.1%

$35k–$50k 6.5%

$50k–$75k 2.9%

$75k–$100k 7.8%

$100k–$150k 14.1%

$150k–$200k 14.5%

$200k+ 45.3%

Range	% of households
Under $10k	1.1%
$15k–$25k	5.7%
$25k–$35k	2.1%
$35k–$50k	6.5%
$50k–$75k	2.9%
$75k–$100k	7.8%
$100k–$150k	14.1%
$150k–$200k	14.5%
$200k+	45.3%
Median income	$181,375

Housing

Home values

$300k–$500k 4.2%

$500k–$1M 60.3%

$1M+ 35.5%

Housing overview

Metric	Value
Median home value	$898,700
Median rent / month	$2,233
Owner occupied	82.3%
Renter occupied	17.7%
Vacant	8.5%
Single-family detached	85.1%
Large apartment buildings	0.0%
Mobile homes	0.0%
Median rooms	6.8
Avg household size (owned)	2.82

Year built

Era	%
2020 or later	0.6%
2010–2019	1.6%
2000–2009	0.3%
1990–1999	0.4%
1980–1989	2.2%
1970–1979	4.4%
1960–1969	13.1%
1950–1959	21.6%
1940–1949	6.4%
1939 or earlier	49.5%

Bedrooms

Size	% of units
No bedroom (studio)	2.1%
1 bedroom	6.4%
2 bedrooms	14.7%
3 bedrooms	40.4%
4 bedrooms	29.3%
5+ bedrooms	7.1%

Vehicles per household

Vehicles	% of households
No vehicle	2.4%
1 vehicle	23.1%
2 vehicles	53.1%
3 or more	21.4%

Heating fuel

Fuel type	%
Utility gas	69.1%
Electricity	3.3%
Propane / LP gas	4.6%
Fuel oil	23.0%

Households & families

Household type	Count	%
Married-couple family	1,152	63.0%
Cohabiting couple	49	2.7%
Male householder, no spouse	212	11.6%
Female householder, no spouse	415	22.7%
Households with children under 18	662	36.2%
Households with seniors (65+)	697	38.1%
Average household size	2.74

Marital status

Status	Male	Female
Never married	22.8%	22.3%
Married	65.7%	57.5%
Separated	0.0%	1.9%
Widowed	2.4%	6.1%
Divorced	9.1%	12.1%

Education

Less than 9th grade 1.6%

Some HS, no diploma 1.2%

HS graduate 19.9%

Some college, no degree 10.6%

Associate's degree 6.9%

Bachelor's degree 25.4%

Graduate / professional 34.5%

Metric	%
HS diploma or higher	97.2%
Bachelor's or higher	59.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	293	21.7%
Kindergarten	122	9.0%
Elementary school	581	43.0%
High school	227	16.8%
College / grad school	127	9.4%

Employment

Industry of employment

Education & healthcare 31.7%

Professional & management 18.5%

Finance & real estate 10.7%

Retail trade 7.0%

Public administration 5.9%

Manufacturing 5.8%

Other services 5.1%

Arts, food & hospitality 4.1%

Transportation & utilities 3.2%

Information 3.2%

Construction 3.1%

Wholesale trade 1.2%

Agriculture & mining 0.6%

Occupation

Category	%
Management, business & arts	62.1%
Service	15.0%
Sales & office	15.9%
Natural resources & construction	3.5%
Production & transportation	3.5%

Employment type

Type	%
Private sector	69.6%
Government	21.4%
Self-employed	9.0%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	64.0%
Carpool	1.3%
Public transit	12.2%
Walk	2.3%
Work from home	18.6%
Other means	1.6%
Avg commute (minutes)	36.3

Poverty

All people 2.0%

Under 18 years 0.0%

18 and over 2.7%

Married-couple families 0.0%

Female-led households 10.6%

Income support

Source	% of households
Social Security	34.3%
Retirement income	26.3%
Supplemental Security	7.9%
Cash public assistance	1.8%
Food stamps / SNAP	3.4%

Health indicators

Condition	%
Obesity	23.3%
High blood pressure	28.5%
High cholesterol	36.3%
Diabetes	7.1%
Heart disease	5.2%
Stroke	2.2%
Asthma	8.5%
Arthritis	20.7%
Kidney disease	2.5%
Pulmonary disease	4.6%
Cancer	7.5%

Behavior / access	%
Smoking	9.5%
Binge drinking	15.1%
No physical activity	16.2%
Less than 7 hrs sleep	30.8%
Depression	15.6%
Fair or poor health	8.1%
Poor mental health	11.4%
Poor physical health	7.1%
No health insurance	7.1%
Visited doctor (checkup)	80.8%
Visited dentist	77.2%
Cholesterol screening	94.5%
Teeth loss	6.6%

Veterans & disability

Veterans	Count	%
Civilian veterans	108	2.9%

Disability	%
Any disability	9.9%
Under 18	1.2%
18–64 years	9.0%
65 and over	23.9%

Health insurance coverage

Type	%
Private insurance	89.1%
Public insurance	22.9%
No insurance	2.2%
Uninsured under 19	2.7%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	4,746	93.8%
Spanish	113	2.4%
Other Indo-European	37	0.8%
Asian & Pacific Islander	41	0.9%
Other languages	35	0.7%

Place of birth & citizenship

Origin	Count	%
Native born (US)	4,497	88.8%
Born in same state	4,382	86.6%
Born in different state	3,779	74.7%
Foreign born	115	2.3%
Naturalized citizen	565	11.2%
Not a US citizen	503	89.0%

Ancestry

Ancestry	Count	%
Italian	1,001	19.8%
French	387	7.6%
Arab	234	4.6%
English	52	1%

Ancestry	Count	%
Polish	50	1%
Irish	45	0.9%
Norwegian	44	0.9%
German	9	0.2%

Technology access

Metric	% of households
Computer access	36.1%
Internet access	94.6%

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

Frequently asked questions about ZIP code 11579

What city is ZIP code 11579 in?

ZIP code 11579 is primarily assigned to Sea Cliff, New York.

What county is ZIP code 11579 in?

ZIP code 11579 falls within Nassau County, New York.

How educated is the population of ZIP code 11579?

60% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Is ZIP code 11579 mostly owner-occupied?

82% of occupied units in ZIP code 11579 are owner-occupied, well above the national average.

What is the median household income in ZIP code 11579?

The median household income in ZIP code 11579 is $181,375, above the national median of ~$75,000.

What is the typical home value in ZIP code 11579?

The median home value in ZIP code 11579 is $898,700.

What timezone is ZIP code 11579 in?

ZIP code 11579 observes the EST timezone.