🇺🇸 United States ZIP Code

STANDARD

11951

Mastic Beach

ZIP Code 11951 is a standard zip code serving Mastic Beach, Mastic Beach, New York (NY), in Suffolk County, United States. It has an estimated population of 13,680 with a median household income of $65,534. The area falls within the America/New_York timezone.

Median Household Income vs. National Average

Location

Country: 🇺🇸 United States
State / Province: New York (NY)
County: Suffolk
City: Mastic Beach
Timezone: America/New_York

Coordinates

Latitude: 40.765700
Longitude: -72.853700

Geographic Details

Land Area: 6.70 mi²
Water Area: 1.12 mi²
Population Density: 2041.0 people per mi² (85th percentile)
Bounding Box: 40.788560°N, 40.729828°S, -72.754548°E, -72.874014°W

With 13,680 residents spread across 6.70 square miles, this area has a population density of 2041.0 people per square mile.

Demographics

13,680

Population

70th percentile

$65,534

Median Income

80th percentile

$211,300

Median Home Value

75th percentile

6.70 mi²

Land Area

The median household income in 11951 is $65,534, and the median home value is $211,300. This places the area in the top 25% nationally for household income.

Housing

5,140

Total Units

4,460

Occupied Units

86.8%

Occupancy Rate

Similar ZIP Codes in New York

ZIP codes with similar median household income in New York.

13035

Cazenovia

$65,556

14467

Henrietta

$65,649

11575

Roosevelt

$66,922

12572

Rhinebeck

$72,551

13033

Cato

$56,292

12910

Altona

$57,159

12020

Ballston Spa

$68,252

11553

Uniondale

$75,008

Frequently Asked Questions

What information is available for each ZIP code?

Each ZIP code page shows city, state, county, geographic coordinates, timezone, population, median household income, median home value, housing units, land area, population density, commute time, educational attainment, area codes, and ZIP code type (Standard, PO Box, or Unique).

What are the different types of ZIP codes?

There are three types of ZIP codes: Standard (residential and commercial delivery areas), PO Box (assigned to post office box sections), and Unique (assigned to a single high-volume address like a government agency or large company). Standard ZIP codes are the most common.

How often is ZIP code data updated?

ZIP code assignments are updated quarterly by the USPS. Demographic data comes from the US Census Bureau's American Community Survey (ACS), which releases new 5-year estimates annually. ZipFYI updates its data to reflect the latest available information.

What is population density and why does it matter?

Population density measures the number of people per square mile in a ZIP code area. It helps identify urban vs. rural areas, affects real estate values, impacts service availability, and is used in market analysis. Dense urban ZIP codes may have 50,000+ people per square mile.

How are ZIP code boundaries determined?

ZIP code boundaries are determined by the USPS based on mail delivery routes, not political or geographic boundaries. They follow carrier routes and may cross city, county, or even state lines. Boundaries can change when the USPS reorganizes delivery operations.

What does median household income tell me about a ZIP code?

Median household income is the middle value when all household incomes in a ZIP code are sorted. Half of households earn more and half earn less. It is a better indicator of typical earnings than average income, which can be skewed by very high or very low outliers.