11566 ZIP Code — Merrick, NY

Nassau County, New York

ZIP code 11566 is located in Merrick, New York, within Nassau County. It covers approximately 5.43 square miles and serves a population of 33,976 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 516/631.

About ZIP code 11566

The housing stock consists of predominantly single-family detached homes. Most homes were built in the 1950s, giving the area an established character. Median home value is $656,100. Owner-occupancy is high at 95%, well above the national average.

The gap between median ($172,868) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 3% is below the national average. 36% 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 38 minutes suggests many residents work outside the immediate area.

Educational attainment is high — 58% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 11566 reflects a community defined by a highly educated population, high homeownership, and a significant Social Security-dependent population.

33,976

population

5.43

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

11566 ZIP code map

Cities in ZIP code 11566

Below are the cities the US Postal Service accepts for ZIP code 11566. Using any city not on this list may result in mail delivery delays.

City	Status
Merrick	Acceptable
Merrick	Preferred

Nearby ZIP codes

11710 Bellmore (1 mi) 11520 Freeport (1.8 mi) 11575 Roosevelt (2.1 mi) 11793 Wantagh (2.3 mi) 11510 Baldwin (3 mi) 11783 Seaford (3.1 mi) 11555 Uniondale (3.3 mi) 11556 Uniondale (3.3 mi) 11553 Uniondale (3.6 mi) 11554 East Meadow (4 mi) 11550 Hempstead (4.4 mi) 11549 Hempstead (4.4 mi)

Demographics updated 05/2026

Population
Total population	33,976
Population density	6,257 / sq mi
State FIPS	36
County FIPS	059

Geography
Land area	5.43 sq mi
Water area	0.97 sq mi
Latitude	40.6645
Longitude	-73.5528
Timezone	Eastern (ET)
Area code	516/631

Total population by age

Gender

Race & ethnicity

Economics updated 05/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	14.2%	20.1%	37.0%
$50k – $100k	17.7%	21.8%	27.0%
$100k – $200k	34.8%	33.1%	24.4%
Over $200k	33.3%	25.0%	11.5%

Demographics & statistics

33,976

Population

6,257

People per sq mi

42.3

Median age

$172,868

Median household income

$67,777

Per capita income

$656,100

Median home value

$2,632

Median monthly rent

95.3%

Home ownership

2.5%

Poverty rate

3.1%

Unemployment

11,082

Housing units

58.1%

Bachelor's or higher

Age distribution

Male Female

1,124

Under 5

1,072

1,262

5–9

1,203

898

10–14

857

873

15–19

832

916

20–24

873

1,807

25–34

1,722

2,379

35–44

2,267

2,344

45–54

2,234

1,319

55–59

1,258

1,391

60–64

1,326

1,911

65–74

1,822

773

75–84

737

397

85+

379

← Male

Female →

Age summary

Group	Count	%
Under 18	7,663	22.6%
18 and over	26,313	77.4%
65 and over	6,019	17.7%
Median age	42.3 years

Race & ethnicity

White 81.8%

Two or more races 5.8%

Hispanic or Latino 5.6%

Asian 3.1%

Black or African American 2.6%

Other race 1%

American Indian / Alaska Native 0.1%

Group	Count	%
White	29,450	81.8%
Two or more races	2,092	5.8%
Hispanic or Latino	2,008	5.6%
Asian	1,100	3.1%
Black or African American	932	2.6%
Other race	364	1%
American Indian / Alaska Native	38	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	14.2%	20.1%	37.0%
$50k – $100k	17.7%	21.8%	27.0%
$100k – $200k	34.8%	33.1%	24.4%
Over $200k	33.3%	25.0%	11.5%

Under $10k 1.4%

$10k–$15k 1.5%

$15k–$25k 2.9%

$25k–$35k 2.2%

$35k–$50k 3.7%

$50k–$75k 9.0%

$75k–$100k 7.4%

$100k–$150k 14.5%

$150k–$200k 16.0%

$200k+ 41.4%

Range	% of households
Under $10k	1.4%
$10k–$15k	1.5%
$15k–$25k	2.9%
$25k–$35k	2.2%
$35k–$50k	3.7%
$50k–$75k	9.0%
$75k–$100k	7.4%
$100k–$150k	14.5%
$150k–$200k	16.0%
$200k+	41.4%
Median income	$172,868

Housing

Home values

Under $50k 1.2%

$50k–$100k 0.6%

$100k–$150k 0.1%

$150k–$200k 0.6%

$200k–$300k 0.5%

$300k–$500k 14.7%

$500k–$1M 75.5%

$1M+ 6.8%

Housing overview

Metric	Value
Median home value	$656,100
Median rent / month	$2,632
Owner occupied	95.3%
Renter occupied	4.7%
Vacant	2.4%
Single-family detached	96.8%
Large apartment buildings	0.2%
Mobile homes	0.2%
Median rooms	7.4
Avg household size (owned)	3.00

Year built

Era	%
2020 or later	0.1%
2010–2019	2.0%
2000–2009	2.8%
1990–1999	2.0%
1980–1989	3.5%
1970–1979	5.0%
1960–1969	16.2%
1950–1959	35.7%
1940–1949	16.0%
1939 or earlier	16.8%

Bedrooms

Size	% of units
No bedroom (studio)	0.1%
1 bedroom	1.5%
2 bedrooms	7.5%
3 bedrooms	39.9%
4 bedrooms	40.1%
5+ bedrooms	11.0%

Vehicles per household

Vehicles	% of households
No vehicle	2.1%
1 vehicle	20.7%
2 vehicles	50.4%
3 or more	26.8%

Heating fuel

Fuel type	%
Utility gas	63.9%
Electricity	1.3%
Propane / LP gas	1.7%
Fuel oil	32.1%
Wood	0.1%
Solar	0.5%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	8,043	70.9%
Cohabiting couple	379	3.3%
Male householder, no spouse	986	8.7%
Female householder, no spouse	1,938	17.1%
Households with children under 18	4,319	38.1%
Households with seniors (65+)	4,161	36.7%
Average household size	2.99

Marital status

Status	Male	Female
Never married	31.5%	21.4%
Married	62.5%	61.9%
Separated	0.2%	1.8%
Widowed	1.8%	7.5%
Divorced	4.0%	7.3%

Education

Less than 9th grade 1.5%

Some HS, no diploma 2.7%

HS graduate 18.2%

Some college, no degree 12.1%

Associate's degree 7.4%

Bachelor's degree 31.0%

Graduate / professional 27.1%

Metric	%
HS diploma or higher	95.8%
Bachelor's or higher	58.1%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	611	7.8%
Kindergarten	391	5.0%
Elementary school	3,351	42.9%
High school	1,628	20.9%
College / grad school	1,824	23.4%

Employment

Industry of employment

Education & healthcare 33.9%

Professional & management 14.5%

Finance & real estate 10.2%

Retail trade 7.7%

Arts, food & hospitality 6.2%

Public administration 6.0%

Construction 5.6%

Transportation & utilities 4.7%

Manufacturing 3.7%

Wholesale trade 2.9%

Information 2.6%

Other services 1.7%

Agriculture & mining 0.2%

Occupation

Category	%
Management, business & arts	55.5%
Service	11.0%
Sales & office	22.0%
Natural resources & construction	6.1%
Production & transportation	5.3%

Employment type

Type	%
Private sector	73.1%
Government	21.5%
Self-employed	5.0%
Unpaid family workers	0.4%

Commute

Method	%
Drive alone	62.7%
Carpool	5.9%
Public transit	14.2%
Walk	0.5%
Work from home	15.7%
Other means	0.9%
Avg commute (minutes)	37.9

Poverty

All people 2.5%

Under 18 years 2.3%

18 and over 2.5%

Married-couple families 1.1%

Female-led households 3.8%

Income support

Source	% of households
Social Security	35.8%
Retirement income	28.5%
Supplemental Security	3.1%
Cash public assistance	1.0%
Food stamps / SNAP	0.9%

Health indicators

Condition	%
Obesity	22.5%
High blood pressure	27.1%
High cholesterol	34.1%
Diabetes	6.6%
Heart disease	4.9%
Stroke	2.1%
Asthma	8.3%
Arthritis	19.5%
Kidney disease	2.3%
Pulmonary disease	4.3%
Cancer	7.1%

Behavior / access	%
Smoking	9.8%
Binge drinking	15.9%
No physical activity	16.1%
Less than 7 hrs sleep	31.1%
Depression	15.5%
Fair or poor health	7.7%
Poor mental health	11.6%
Poor physical health	6.8%
No health insurance	7.5%
Visited doctor (checkup)	79.9%
Visited dentist	77.2%
Cholesterol screening	93.9%
Teeth loss	6.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	1,048	4.0%

Disability	%
Any disability	8.1%
Under 18	1.7%
18–64 years	6.2%
65 and over	22.5%

Health insurance coverage

Type	%
Private insurance	86.0%
Public insurance	24.6%
No insurance	2.3%
Uninsured under 19	1.9%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	31,780	93.5%
Spanish	988	3.1%
Other Indo-European	236	0.7%
Asian & Pacific Islander	417	1.3%
Other languages	280	0.9%

Place of birth & citizenship

Origin	Count	%
Native born (US)	31,148	91.7%
Born in same state	30,847	90.8%
Born in different state	29,246	86.1%
Foreign born	301	0.9%
Naturalized citizen	2,828	8.3%
Not a US citizen	2,228	78.8%

Ancestry

Ancestry	Count	%
Italian	7,185	21.1%
Arab	1,407	4.1%
French	759	2.2%
Irish	515	1.5%
Norwegian	172	0.5%

Ancestry	Count	%
English	118	0.3%
Polish	69	0.2%
German	29	0.1%
Dutch	11	0%

Technology access

Metric	% of households
Computer access	33.4%
Internet access	95.2%

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

Frequently asked questions about ZIP code 11566

What city is ZIP code 11566 in?

ZIP code 11566 is primarily assigned to Merrick, New York.

What county is ZIP code 11566 in?

ZIP code 11566 falls within Nassau County, New York.

Is ZIP code 11566 mostly owner-occupied?

95% of occupied units in ZIP code 11566 are owner-occupied, well above the national average.

How educated is the population of ZIP code 11566?

58% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

Does ZIP code 11566 have a large retiree population?

36% of households in ZIP code 11566 receive Social Security income, suggesting a significant retiree or disability population.

What is the median household income in ZIP code 11566?

The median household income in ZIP code 11566 is $172,868, above the national median of ~$75,000.

What timezone is ZIP code 11566 in?

ZIP code 11566 observes the EST timezone.