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New York ZIP Codes
Nassau County
Hewlett, NY
11557
11557 ZIP Code — Hewlett, NY
Nassau County, New York
ZIP code 11557 is located in
Hewlett ,
New York ,
within Nassau County .
It covers approximately 2.04 square miles and serves a population of
8,290 residents.
This is a standard ZIP code in the Eastern (ET) timezone,
served by area code 516 .
About ZIP code 11557
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 $692,400. Owner-occupancy is high at 89%, well above the national average.
The gap between median ($162,266) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 2% is below the national average. 37% 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 35 minutes suggests many residents work outside the immediate area. Remote work is prevalent — 23% of workers work from home.
Educational attainment is high — 67% of residents hold a bachelor's degree or higher, well above the national average of 33%.
Overall, ZIP code 11557 reflects a community defined by a highly educated population, high homeownership, a high rate of remote workers, and a significant Social Security-dependent population.
11557 ZIP code map
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Cities in ZIP code 11557
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Nearby ZIP codes
Demographics
updated 06/2026
Population
Total population
8,290
Population density
4,064 / sq mi
State FIPS
36
County FIPS
059
Geography
Land area
2.04 sq mi
Water area
0.17 sq mi
Latitude
40.6365
Longitude
-73.6962
Timezone
Eastern (ET)
Area code
516
Economics
updated 06/2026
Household income
Income range
This ZIP
County avg
State avg
Under $50k
13.5%
20.1%
37.0%
$50k – $100k
23.1%
21.8%
27.0%
$100k – $200k
35.9%
33.1%
24.4%
Over $200k
27.5%
25.0%
11.5%
Demographics & statistics
$162,266
Median household income
$692,400
Median home value
$2,523
Median monthly rent
67.4%
Bachelor's or higher
Age distribution
Age summary
Group Count %
Under 18 2,180 26.3%
18 and over 6,110 73.7%
65 and over 1,503 18.1%
Median age 40.1 years
Race & ethnicity
Black or African American
6.5%
Group Count %
White 6,127 69.3%
Asian 854 9.7%
Black or African American 579 6.5%
Hispanic or Latino 554 6.3%
Two or more races 399 4.5%
Other race 331 3.7%
Household income
Income range
This ZIP
County avg
State avg
Under $50k
13.5%
20.1%
37.0%
$50k – $100k
23.1%
21.8%
27.0%
$100k – $200k
35.9%
33.1%
24.4%
Over $200k
27.5%
25.0%
11.5%
Range % of households
Under $10k 1.4%
$10k–$15k 0.8%
$15k–$25k 2.8%
$25k–$35k 1.7%
$35k–$50k 3.0%
$50k–$75k 7.8%
$75k–$100k 7.7%
$100k–$150k 18.0%
$150k–$200k 21.9%
$200k+ 34.9%
Median income $162,266
Housing
Housing overview
Metric Value
Median home value $692,400
Median rent / month $2,523
Owner occupied 89.2%
Renter occupied 10.8%
Vacant 6.4%
Single-family detached 73.4%
Large apartment buildings 8.3%
Mobile homes 0.0%
Median rooms 7.1
Avg household size (owned) 3.22
Year built
Era %
2020 or later 0.5%
2010–2019 0.5%
2000–2009 3.6%
1990–1999 2.4%
1980–1989 2.3%
1970–1979 5.1%
1960–1969 11.6%
1950–1959 38.7%
1940–1949 14.2%
1939 or earlier 21.1%
Bedrooms
Size % of units
No bedroom (studio) 0.8%
1 bedroom 5.7%
2 bedrooms 14.7%
3 bedrooms 19.5%
4 bedrooms 38.6%
5+ bedrooms 20.8%
Vehicles per household
Vehicles % of households
No vehicle 2.0%
1 vehicle 31.7%
2 vehicles 49.8%
3 or more 16.5%
Heating fuel
Fuel type %
Utility gas 68.9%
Electricity 7.7%
Fuel oil 22.1%
Solar 0.5%
Households & families
Household type Count %
Married-couple family 1,908 73.1%
Cohabiting couple 77 2.9%
Male householder, no spouse 233 8.9%
Female householder, no spouse 393 15.1%
Households with children under 18 1,052 40.3%
Households with seniors (65+) 1,062 40.7%
Average household size 3.17
Marital status
Status Male Female
Never married 33.1% 28.7%
Married 63.5% 57.1%
Separated 0.0% 1.1%
Widowed 1.3% 9.7%
Divorced 2.0% 3.4%
Education
Some college, no degree
10.5%
Graduate / professional
30.3%
Metric %
HS diploma or higher 94.3%
Bachelor's or higher 67.4%
School enrollment (ages 3–17)
Type Count %
Nursery / preschool 109 4.7%
Kindergarten 64 2.7%
Elementary school 908 38.7%
High school 821 35.0%
College / grad school 442 18.9%
Employment
Industry of employment
Education & healthcare
40.0%
Professional & management
17.2%
Finance & real estate
10.1%
Arts, food & hospitality
4.3%
Transportation & utilities
2.6%
Public administration
2.0%
Occupation
Category %
Management, business & arts 60.1%
Service 9.5%
Sales & office 22.7%
Natural resources & construction 4.4%
Production & transportation 3.3%
Employment type
Type %
Private sector 79.3%
Government 18.0%
Self-employed 2.7%
Unpaid family workers 0.1%
Commute
Method %
Drive alone 57.8%
Carpool 6.6%
Public transit 11.2%
Walk 1.0%
Work from home 23.1%
Other means 0.4%
Avg commute (minutes) 35.1
Poverty
Married-couple families
1.3%
Female-led households
0.0%
Income support
Source % of households
Social Security 37.2%
Retirement income 24.0%
Supplemental Security 7.6%
Cash public assistance 0.5%
Food stamps / SNAP 2.7%
Health indicators
Condition %
Obesity 22.8%
High blood pressure 30.3%
High cholesterol 36.6%
Diabetes 7.8%
Heart disease 5.9%
Stroke 2.5%
Asthma 8.3%
Arthritis 21.9%
Kidney disease 2.7%
Pulmonary disease 5.2%
Cancer 7.9%
Behavior / access %
Smoking 10.3%
Binge drinking 14.2%
No physical activity 18.6%
Less than 7 hrs sleep 31.2%
Depression 15.1%
Fair or poor health 9.3%
Poor mental health 11.4%
Poor physical health 7.6%
No health insurance 8.6%
Visited doctor (checkup) 81.0%
Visited dentist 74.8%
Cholesterol screening 93.9%
Teeth loss 8.3%
Veterans & disability
Veterans Count %
Civilian veterans 120 2.0%
Disability %
Any disability 8.4%
Under 18 4.0%
18–64 years 8.2%
65 and over 15.2%
Health insurance coverage
Type %
Private insurance 84.6%
Public insurance 30.9%
No insurance 2.3%
Uninsured under 19 3.8%
Language & origin
Language spoken at home (age 5+)
Language Count %
English only 7,842 94.6%
Spanish 774 9.9%
Other Indo-European 208 2.7%
Asian & Pacific Islander 243 3.1%
Other languages 247 3.1%
Place of birth & citizenship
Origin Count %
Native born (US) 6,466 78.0%
Born in same state 6,067 73.2%
Born in different state 5,535 66.8%
Foreign born 399 4.8%
Naturalized citizen 1,824 22.0%
Not a US citizen 1,555 85.3%
Ancestry
Ancestry Count %
Arab 333 4%
Irish 278 3.4%
Italian 170 2.1%
Ancestry Count %
French 135 1.6%
German 4 0%
Norwegian 2 0%
Technology access
Metric % of households
Computer access 31.5%
Internet access 98.2%
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
Frequently asked questions about ZIP code 11557
What city is ZIP code 11557 in?
ZIP code 11557 is primarily assigned to Hewlett, New York.
What county is ZIP code 11557 in?
ZIP code 11557 falls within Nassau County, New York.
How educated is the population of ZIP code 11557?
67% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.
Is ZIP code 11557 mostly owner-occupied?
89% of occupied units in ZIP code 11557 are owner-occupied, well above the national average.
Does ZIP code 11557 have a large retiree population?
37% of households in ZIP code 11557 receive Social Security income, suggesting a significant retiree or disability population.
What is the median household income in ZIP code 11557?
The median household income in ZIP code 11557 is $162,266, above the national median of ~$75,000.
What timezone is ZIP code 11557 in?
ZIP code 11557 observes the EST timezone.
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