Mount Sinai

Census-designated place in Suffolk County, New York

View of Mount Sinai, New York
Photo: Iracaz at English Wikipedia · Public domain

Mount Sinai is an unincorporated community (census-designated place) in Suffolk County, New York, with 11,623 residents (2020 Census). It sits at 33 ft (10 m) above sea level. The nearest town is Miller Place, 1.4 miles E.

About Mount Sinai

Mount Sinai is a hamlet and census-designated place (CDP) located within the Town of Brookhaven, in Suffolk County, New York, United States. As of the 2020 census, Mount Sinai had a population of 11,623. The hamlet is located on the North Shore of Long Island.

Mount Sinai was first settled in the 1660s and was known by the name of Old Mans until a name change in the 1840s. Initially an agricultural hamlet, it transitioned into a popular resort town in the late-19th century and developed into a suburb of New York City in the mid-20th century. While primarily a residential community, the hamlet contains Mount Sinai Harbor and its popular public beach, Cedar Beach.

Text: Wikipedia · CC BY-SA 4.0

Mount Sinai weather: 7-day forecast

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Living in Mount Sinai

Median household income
$162,188
Median home value
$661,200
Median rent
$3,088/mo
Median age
46.6
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Map of Mount Sinai

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Mount Sinai, NY population

Mount Sinai had 11,623 residents in the 2020 Census.

2020 Census11,623
Density1,937 per sq mi (748 per km²)

Source: U.S. Census Bureau, Decennial Census.

Mount Sinai at a glance

StateNew York (NY)
CountySuffolk County
TypeCensus-designated place
Population11,623 (2020)
Land area6.00 sq mi (15.5 km²)
Water area1.44 sq mi (3.73 km²)
Elevation33 ft (10 m)
Coordinates40.9418° N, 73.0202° W
ZIP code11766
Census code (GEOID)3649066

Sources: U.S. Census Bureau (Gazetteer, ZCTA), USGS GNIS, Wikidata.

Towns near Mount Sinai

Straight-line distance between town centers.

Frequently asked questions about Mount Sinai

What county is Mount Sinai in?

Mount Sinai is in Suffolk County, New York.

What is the population of Mount Sinai, NY?

11,623 people lived in Mount Sinai at the 2020 Census.

What is the ZIP code of Mount Sinai, NY?

The ZIP code of Mount Sinai is 11766.

What is the elevation of Mount Sinai?

33 feet (10 m) above sea level.

What towns are near Mount Sinai?

Miller Place (1.4 mi), Port Jefferson (1.7 mi), Port Jefferson Station (2.6 mi), Terryville (2.7 mi), Belle Terre (2.8 mi).

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