Mastic Beach ZIP Code List — Suffolk County, NY

There is one unique ZIP code in Mastic Beach, New York and it is 11951. Area code: 631.

ZIP codes

4.80

sq mi land

1.09

sq mi water

631

area code

Mastic Beach, NY ZIP code map

About Mastic Beach, NY

Mastic Beach, NY is a charming coastal community located in Suffolk County. Nestled on Long Island's South Shore, it offers a blend of natural beauty and suburban convenience. The town is known for its picturesque waterfront and close-knit community atmosphere.

Location & geography

Mastic Beach spans a total area of 5.89 square miles, which includes 4.80 square miles of land and 1.09 square miles of water. The area is characterized by its coastal terrain, featuring sandy shores and marshlands along Moriches Bay. Nearby cities include Shirley, located just 3 miles to the northwest, and East Moriches, approximately 4 miles to the east.

Community & economy

The community of Mastic Beach is known for its relaxed lifestyle and scenic views of the water. Residents enjoy a variety of recreational activities, including fishing, boating, and enjoying the local parks. While primarily a residential area, the local economy is supported by small businesses and seasonal tourism.

Transportation

Mastic Beach is accessible via the Long Island Expressway (I-495), which runs northwest to southeast, providing connectivity to the greater New York metropolitan area. The nearest airport is Long Island MacArthur Airport, located about 12 miles to the northwest. Public transportation options include local bus services that connect to nearby towns and railway stations.

History

Mastic Beach was established in the early 20th century, evolving as a summer resort destination before becoming a year-round community. The area has historically been associated with fishing and maritime industries, which shaped its development. Notable events include the incorporation of the town as a village in 2010, marking a significant milestone for local governance.

Did you know?

One surprising fact about Mastic Beach is that it was originally developed as a summer vacation spot for city residents seeking a retreat. Today, it continues to blend residential living with its seaside charm, making it a unique destination on Long Island.

ZIP codes for Mastic Beach, NY (1)

ZIP code	City	County	Map
11951	Mastic Beach	Suffolk	View map

Demographics & statistics

14,969

Population

38.4

Median age

$99,040

Median household income

$36,167

Per capita income

$296,500

Median home value

$2,068

Median monthly rent

80.5%

Home ownership

17.4%

Poverty rate

6.2%

Unemployment

4,395

Housing units

19.0%

Bachelor's or higher

Age distribution

Male Female

530

Under 5

694

412

5–9

540

584

10–14

765

399

15–19

523

332

20–24

434

769

25–34

1,008

1,026

35–44

1,344

764

45–54

1,001

516

55–59

677

399

60–64

524

405

65–74

531

201

75–84

263

142

85+

186

← Male

Female →

Age summary

Group	Count	%
Under 18	4,149	27.7%
18 and over	10,820	72.3%
65 and over	1,728	11.5%
Median age	38.4 years

Race & ethnicity

White 76.1%

Black or African American 8.1%

Two or more races 7.4%

Hispanic or Latino 4.9%

Other race 1.9%

Asian 1.6%

Group	Count	%
White	11,978	76.1%
Black or African American	1,274	8.1%
Two or more races	1,158	7.4%
Hispanic or Latino	778	4.9%
Other race	298	1.9%
Asian	258	1.6%

Household income

Under $10k 8.3%

$10k–$15k 1.2%

$15k–$25k 7.7%

$25k–$35k 7.1%

$35k–$50k 4.4%

$50k–$75k 9.7%

$75k–$100k 12.1%

$100k–$150k 30.9%

$150k–$200k 7.6%

$200k+ 11.1%

Range	% of households
Under $10k	8.3%
$10k–$15k	1.2%
$15k–$25k	7.7%
$25k–$35k	7.1%
$35k–$50k	4.4%
$50k–$75k	9.7%
$75k–$100k	12.1%
$100k–$150k	30.9%
$150k–$200k	7.6%
$200k+	11.1%
Median income	$99,040

Housing

Home values

$100k–$150k 7.3%

$150k–$200k 6.7%

$200k–$300k 37.4%

$300k–$500k 45.7%

$500k–$1M 2.9%

Housing overview

Metric	Value
Median home value	$296,500
Median rent / month	$2,068
Owner occupied	80.5%
Renter occupied	19.5%
Vacant	9.7%
Single-family detached	94.0%
Large apartment buildings	0.4%
Mobile homes	0.0%
Median rooms	5.9
Avg household size (owned)	2.99

Year built

Era	%
2020 or later	0.2%
2010–2019	2.6%
2000–2009	5.5%
1990–1999	6.8%
1980–1989	12.9%
1970–1979	26.3%
1960–1969	15.2%
1950–1959	14.3%
1940–1949	9.7%
1939 or earlier	6.5%

Bedrooms

Size	% of units
No bedroom (studio)	0.4%
1 bedroom	3.8%
2 bedrooms	24.9%
3 bedrooms	54.7%
4 bedrooms	14.2%
5+ bedrooms	1.9%

Vehicles per household

Vehicles	% of households
No vehicle	7.5%
1 vehicle	23.6%
2 vehicles	46.5%
3 or more	22.3%

Heating fuel

Fuel type	%
Utility gas	4.2%
Electricity	4.5%
Propane / LP gas	2.7%
Fuel oil	86.5%
Wood	0.6%
No fuel used	0.5%

Households & families

Household type	Count	%
Married-couple family	2,556	53.0%
Cohabiting couple	517	10.7%
Male householder, no spouse	551	11.4%
Female householder, no spouse	1,195	24.8%
Households with children under 18	1,725	35.8%
Households with seniors (65+)	1,445	30.0%
Average household size	3.10

Marital status

Status	Male	Female
Never married	38.9%	34.0%
Married	52.4%	45.2%
Separated	1.2%	0.7%
Widowed	2.9%	12.0%
Divorced	4.6%	8.2%

Education

Less than 9th grade 3.5%

Some HS, no diploma 9.2%

HS graduate 36.8%

Some college, no degree 16.9%

Associate's degree 14.7%

Bachelor's degree 11.4%

Graduate / professional 7.5%

Metric	%
HS diploma or higher	87.3%
Bachelor's or higher	19.0%

School enrollment (ages 3–17)

Type	Count	%
Nursery / preschool	157	4.4%
Kindergarten	13	0.4%
Elementary school	1,923	53.8%
High school	845	23.6%
College / grad school	636	17.8%

Employment

Industry of employment

Education & healthcare 28.5%

Professional & management 12.6%

Retail trade 12.2%

Construction 9.8%

Manufacturing 8.5%

Transportation & utilities 6.6%

Arts, food & hospitality 5.6%

Finance & real estate 4.5%

Other services 4.4%

Public administration 3.1%

Information 2.5%

Wholesale trade 1.7%

Agriculture & mining 0.1%

Occupation

Category	%
Management, business & arts	32.2%
Service	19.8%
Sales & office	22.2%
Natural resources & construction	13.9%
Production & transportation	11.9%

Employment type

Type	%
Private sector	84.0%
Government	13.1%
Self-employed	2.8%
Unpaid family workers	0.0%

Commute

Method	%
Drive alone	81.4%
Carpool	8.5%
Public transit	1.3%
Walk	1.1%
Other means	1.8%
Avg commute (minutes)	36.8

Poverty

All people 17.4%

Under 18 years 27.0%

18 and over 13.8%

Married-couple families 3.9%

Female-led households 45.5%

Income support

Source	% of households
Social Security	30.8%
Retirement income	21.4%
Supplemental Security	2.6%
Cash public assistance	4.1%
Food stamps / SNAP	12.5%

Health indicators

Condition	%
High blood pressure	27.3%
High cholesterol	28.2%
Heart disease	4.9%
Stroke	2.4%
Asthma	10.4%
Arthritis	18.5%
Kidney disease	2.4%
Pulmonary disease	6.2%
Cancer	5.1%

Behavior / access	%
Binge drinking	19.1%
No physical activity	25.8%
Less than 7 hrs sleep	37.4%
Fair or poor health	13.0%
Poor mental health	15.8%
Poor physical health	9.8%
No health insurance	14.1%
Visited doctor (checkup)	76.4%
Visited dentist	61.7%
Cholesterol screening	89.3%
Teeth loss	14.8%

Veterans & disability

Veterans	Count	%
Civilian veterans	415	3.8%

Disability	%
Any disability	11.3%
Under 18	11.4%
18–64 years	9.7%
65 and over	19.2%

Health insurance coverage

Type	%
Private insurance	78.6%
Public insurance	31.0%
Uninsured under 19	0.0%

Language & origin

Language spoken at home (age 5+)

Language	Count	%
English only	13,745	91.8%
Spanish	654	4.8%
Other Indo-European	428	3.1%
Asian & Pacific Islander	153	1.1%
Other languages	58	0.4%

Place of birth & citizenship

Origin	Count	%
Native born (US)	13,437	89.8%
Born in same state	13,206	88.2%
Born in different state	12,557	83.9%
Foreign born	231	1.5%
Naturalized citizen	1,532	10.2%
Not a US citizen	572	37.3%

Ancestry

Ancestry	Count	%
Italian	2,688	18%
Arab	708	4.7%
French	389	2.6%
Polish	131	0.9%

Ancestry	Count	%
English	95	0.6%
Norwegian	64	0.4%
Irish	20	0.1%
German	8	0.1%

Technology access

Metric	% of households
Computer access	32.2%
Internet access	95.4%

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

Frequently asked questions

What is the ZIP code for Mastic Beach, NY?

Mastic Beach, NY has one ZIP code: 11951.

What is the main ZIP code for Mastic Beach, NY?

The primary ZIP code for Mastic Beach, NY is 11951. The city uses area code 631 for phone service.

What county is Mastic Beach, NY in?

Mastic Beach is located in Suffolk County, New York.

How many ZIP codes are in Mastic Beach, NY?

Mastic Beach, NY has 1 ZIP code.

What is the ZIP code for Mastic Beach's waterfront area along Moriches Bay?

The Moriches Bay waterfront area of Mastic Beach is located in ZIP code 11951, which serves the entire Mastic Beach community in Suffolk County.

Which ZIP code covers the Mastic Beach downtown commercial district?

The downtown commercial area of Mastic Beach, including businesses along Neighborhood Road, is served by ZIP code 11951, the only ZIP code for this Suffolk County hamlet.