10543 ZIP Code — Mamaroneck, NY

Westchester County, New York

ZIP code 10543 is located in Mamaroneck, New York, within Westchester County. It covers approximately 4.28 square miles and serves a population of 21,281 residents. This is a standard ZIP code in the Eastern (ET) timezone, served by area code 914.

About ZIP code 10543

The housing stock consists of a mix of housing types. Most homes were built in the pre-1940, giving the area an established character. Median home value is $729,100. Owner-occupancy sits near the national average at 62%.

The gap between median ($128,047) and mean household income suggests income inequality — a small number of higher earners pull the average up. The poverty rate of 6% is below the national average. 31% 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. The average commute of 31 minutes is near the national average.

Educational attainment is high — 55% of residents hold a bachelor's degree or higher, well above the national average of 33%.

Overall, ZIP code 10543 reflects a community defined by a highly educated population and a significant Social Security-dependent population.

21,281

population

4.28

sq mi land

Standard

ZIP type

Eastern (ET)

timezone

10543 ZIP code map

Cities in ZIP code 10543

Below are the cities the US Postal Service accepts for ZIP code 10543. Using any city not on this list may result in mail delivery delays.

City	Status
Mamaroneck	Preferred

Nearby ZIP codes

10538 Larchmont (1.5 mi) 10528 Harrison (2.1 mi) 10804 New Rochelle (2.7 mi) 10580 Rye (3 mi) 10801 New Rochelle (3.4 mi) 10709 Eastchester (3.7 mi) 10605 White Plains (3.9 mi) 10583 Scarsdale (4 mi) 10805 New Rochelle (4.4 mi) 10707 Tuckahoe (4.6 mi) 10708 Bronxville (4.9 mi) 10552 Mount Vernon (5 mi)

Demographics updated 06/2026

Population
Total population	21,281
Population density	4,972 / sq mi
State FIPS	36
County FIPS	119

Geography
Land area	4.28 sq mi
Water area	0.14 sq mi
Latitude	40.9513
Longitude	-73.7368
Timezone	Eastern (ET)
Area code	914

Total population by age

Gender

Race & ethnicity

Economics updated 06/2026

Household income

Income range	This ZIP	County avg	State avg
Under $50k	21.2%	27.3%	37.0%
$50k – $100k	23.2%	23.0%	27.0%
$100k – $200k	27.4%	26.5%	24.4%
Over $200k	28.2%	23.2%	11.5%

Demographics & statistics

21,281

Population

4,972

People per sq mi

40.5

Median age

$128,047

Median household income

$71,130

Per capita income

$729,100

Median home value

$1,951

Median monthly rent

62.3%

Home ownership

6.2%

Poverty rate

4.0%

Unemployment

5,127

Housing units

54.8%

Bachelor's or higher

Age distribution

Male Female

594

Under 5

548

962

5–9

886

623

10–14

575

512

15–19

471

663

20–24

612

1,379

25–34

1,271

1,581

35–44

1,458

1,661

45–54

1,531

669

55–59

616

581

60–64

536

887

65–74

817

626

75–84

577

336

85+

309

← Male

Female →

Age summary

Group	Count	%
Under 18	4,831	22.7%
18 and over	16,450	77.3%
65 and over	3,552	16.7%
Median age	40.5 years

Race & ethnicity

White 59.7%

Hispanic or Latino 15.4%

Other race 10.5%

Two or more races 6.5%

Asian 3.8%

Black or African American 3.6%

American Indian / Alaska Native 0.4%

Native Hawaiian / Pacific Islander 0.1%

Group	Count	%
White	15,014	59.7%
Hispanic or Latino	3,884	15.4%
Other race	2,637	10.5%
Two or more races	1,632	6.5%
Asian	953	3.8%
Black or African American	908	3.6%
American Indian / Alaska Native	113	0.4%
Native Hawaiian / Pacific Islander	24	0.1%

Household income

Income range	This ZIP	County avg	State avg
Under $50k	21.2%	27.3%	37.0%
$50k – $100k	23.2%	23.0%	27.0%
$100k – $200k	27.4%	26.5%	24.4%
Over $200k	28.2%	23.2%	11.5%

Under $10k 4.2%

$10k–$15k 1.4%

$15k–$25k 3.4%

$25k–$35k 5.3%

$35k–$50k 7.0%

$50k–$75k 8.1%

$75k–$100k 10.0%

$100k–$150k 17.8%

$150k–$200k 10.6%

$200k+ 32.1%

Range	% of households
Under $10k	4.2%
$10k–$15k	1.4%
$15k–$25k	3.4%
$25k–$35k	5.3%
$35k–$50k	7.0%
$50k–$75k	8.1%
$75k–$100k	10.0%
$100k–$150k	17.8%
$150k–$200k	10.6%
$200k+	32.1%
Median income	$128,047

Housing

Home values

Under $50k 0.5%

$50k–$100k 1.1%

$100k–$150k 0.9%

$150k–$200k 3.5%

$200k–$300k 6.1%

$300k–$500k 9.9%

$500k–$1M 53.9%

$1M+ 24.0%

Housing overview

Metric	Value
Median home value	$729,100
Median rent / month	$1,951
Owner occupied	62.3%
Renter occupied	37.7%
Vacant	5.8%
Single-family detached	38.7%
Large apartment buildings	18.1%
Mobile homes	0.0%
Median rooms	5.0
Avg household size (owned)	2.96

Year built

Era	%
2020 or later	0.0%
2010–2019	4.0%
2000–2009	2.4%
1990–1999	9.0%
1980–1989	5.5%
1970–1979	2.5%
1960–1969	13.2%
1950–1959	16.2%
1940–1949	7.9%
1939 or earlier	39.3%

Bedrooms

Size	% of units
No bedroom (studio)	1.6%
1 bedroom	17.1%
2 bedrooms	33.5%
3 bedrooms	28.0%
4 bedrooms	14.5%
5+ bedrooms	5.4%

Vehicles per household

Vehicles	% of households
No vehicle	12.4%
1 vehicle	41.6%
2 vehicles	29.2%
3 or more	16.8%

Heating fuel

Fuel type	%
Utility gas	58.4%
Electricity	8.6%
Propane / LP gas	1.5%
Fuel oil	30.7%
Wood	0.4%
Solar	0.1%
No fuel used	0.2%

Households & families

Household type	Count	%
Married-couple family	4,387	58.6%
Cohabiting couple	141	1.9%
Male householder, no spouse	1,202	16.1%
Female householder, no spouse	1,756	23.5%
Households with children under 18	2,542	34.0%
Households with seniors (65+)	2,384	31.8%
Average household size	2.80

Marital status

Status	Male	Female
Never married	35.4%	24.3%
Married	53.9%	53.3%
Separated	3.5%	5.1%
Widowed	2.7%	8.3%
Divorced	4.5%	9.0%

Education

Less than 9th grade 6.2%

Some HS, no diploma 5.6%

HS graduate 17.1%

Some college, no degree 11.8%

Associate's degree 4.5%

Bachelor's degree 30.2%

Graduate / professional 24.5%

Metric	%
HS diploma or higher	88.1%
Bachelor's or higher	54.8%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	352	7.0%
Kindergarten	146	2.9%
Elementary school	2,635	52.2%
High school	865	17.1%
College / grad school	1,050	20.8%

Employment

Industry of employment

Education & healthcare 22.0%

Professional & management 17.2%

Finance & real estate 13.3%

Arts, food & hospitality 8.1%

Manufacturing 7.9%

Construction 7.5%

Retail trade 7.2%

Other services 5.6%

Information 3.7%

Wholesale trade 2.6%

Transportation & utilities 2.5%

Public administration 2.1%

Agriculture & mining 0.3%

Occupation

Category	%
Management, business & arts	54.5%
Service	13.1%
Sales & office	15.4%
Natural resources & construction	10.4%
Production & transportation	6.5%

Employment type

Type	%
Private sector	78.7%
Government	12.5%
Self-employed	8.9%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	46.9%
Carpool	7.5%
Public transit	17.8%
Walk	9.3%
Work from home	18.0%
Other means	0.5%
Avg commute (minutes)	30.6

Poverty

All people 6.2%

Under 18 years 7.7%

18 and over 5.8%

Married-couple families 1.2%

Female-led households 4.7%

Income support

Source	% of households
Social Security	31.3%
Retirement income	20.5%
Supplemental Security	3.5%
Cash public assistance	3.3%
Food stamps / SNAP	7.1%

Health indicators

Condition	%
Obesity	19.9%
High blood pressure	25.3%
High cholesterol	28.9%
Diabetes	7.8%
Heart disease	5.1%
Stroke	2.4%
Asthma	8.7%
Arthritis	18.7%
Kidney disease	2.6%
Pulmonary disease	4.8%
Cancer	6.9%

Behavior / access	%
Smoking	10.9%
Binge drinking	15.4%
No physical activity	19.8%
Less than 7 hrs sleep	30.4%
Depression	16.8%
Fair or poor health	9.9%
Poor mental health	11.8%
Poor physical health	8.0%
No health insurance	11.8%
Visited doctor (checkup)	76.4%
Visited dentist	72.9%
Cholesterol screening	92.4%
Teeth loss	9.7%

Veterans & disability

Veterans	Count	%
Civilian veterans	523	3.2%

Disability	%
Any disability	8.6%
Under 18	0.5%
18–64 years	5.5%
65 and over	32.3%

Health insurance coverage

Type	%
Private insurance	75.4%
Public insurance	29.8%
No insurance	6.2%
Uninsured under 19	0.3%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	20,139	94.6%
Spanish	3,245	16.1%
Other Indo-European	2,019	10.0%
Asian & Pacific Islander	706	3.5%
Other languages	374	1.9%

Place of birth & citizenship

Origin	Count	%
Native born (US)	15,071	70.8%
Born in same state	14,649	68.8%
Born in different state	11,105	52.2%
Foreign born	422	2.0%
Naturalized citizen	6,210	29.2%
Not a US citizen	3,051	49.1%

Ancestry

Ancestry	Count	%
Italian	2,169	10.2%
Arab	1,404	6.6%
French	720	3.4%
Irish	147	0.7%

Ancestry	Count	%
English	110	0.5%
Norwegian	78	0.4%
Polish	54	0.3%
German	15	0.1%

Technology access

Metric	% of households
Computer access	35.2%
Internet access	96.6%

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

Frequently asked questions about ZIP code 10543

What city is ZIP code 10543 in?

ZIP code 10543 is primarily assigned to Mamaroneck, New York.

What county is ZIP code 10543 in?

ZIP code 10543 falls within Westchester County, New York.

How educated is the population of ZIP code 10543?

55% of residents hold a bachelor's degree or higher — well above the national average of ~33%, reflecting a highly educated population.

What is the median household income in ZIP code 10543?

The median household income in ZIP code 10543 is $128,047, above the national median of ~$75,000.

What is the typical home value in ZIP code 10543?

The median home value in ZIP code 10543 is $729,100.

What is the population of ZIP code 10543?

ZIP code 10543 has an estimated population of 21,281 residents, with a density of 4,969 people per square mile.

What timezone is ZIP code 10543 in?

ZIP code 10543 observes the EST timezone.