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ZIP Code 11766 - Mount Sinai New York

Overview

ZIP Code 11766 is located in Mount Sinai New York. Portions of 11766 are also in Coram and Miller Place and Port Jefferson and Port Jefferson Station and Brookhaven (town). 11766 is entirely within Suffolk County. Regionally, 11766 is located in Metro New York City.

ZIP Code 11766 Quick Stats

ZIP Code NameMount Sinai
Primary CountySuffolk County
ZIP Code TypeStandard
Population (2022)11,476
Area Code(s)631 / 934
Current Time
EDT

ZIP Code 11766 Map

Map of ZIP Code 11766 in Mount Sinai, NY — click to open interactive map

11766 Demographics

11766 can be classified socioeconomically as Middle Class class compared to other ZIP Codes in New York based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 11766 is White. The majority race/ethnicity attending public schools in 11766 is White. The current unemployment level in 11766 is 4.4%.

Population11,476
Population Growth Rate0%
Population Density1,956 People per Square Mile
Total Households4,159
Percentage High Income Households16.7%
Median Household Income (2021)$131,544
Average Adjusted Gross Income (2021)$440,860
Current Unemployment Rate (May 2026)4.4%
Sales Tax Rate (2025)8.8%
Majority Race/EthnicityWhite - 87.82%
Public School Majority Race/EthnicityWhite - 81.38%

11766 Race/Ethnicity Breakdown

Race/EthnicityTotalPercentage
White10,42287.82%
Black1120.94%
Hispanic9568.06%
Asian3713.13%
Native American70.06%
Hawaiian/Pac. Islander00%

11766 Public School Race/Ethnicity Breakdown

Race/EthnicityTotalPercentage
White1,70082.93%
Black231.12%
Hispanic1979.61%
Asian1306.34%
Native American00%
Hawaiian/Pac. Islander00%

11766 Educational Attainment Levels

Highest Education LevelTotalPercentage
Less Than 1 Year of College4375.58%
Bachelor Degree1,79822.97%
High School Diploma1,79622.94%
No High School Diploma781%
GED or Alternate1932.47%
1 or More Years of College93611.96%
Associates Degree1,06813.64%
Masters Degree1,13314.47%
Professional Degree2312.95%
Doctorate Degree1582.02%

11766 Geography

Coordinates40.93400955, -73.01490021
Adjacent ZIP Codes
Cities/Towns in 11766
RegionMetro New York City
Metropolitan/Micropolitan Stat AreaNew York-Newark-Jersey City, NY-NJ-PA
Time ZoneEastern Daylight Time
IANA TimezoneAmerica/New_York
Area6 Square Miles

11766 Weather and Climate Data

Plant Hardiness ZoneZone 7a: 0F to 5F
Average First Frost DateOctober 21 - 31
Average Last Frost DateApril 21 - 31
Koppen-Geiger Climate ZoneDfb - Humid Continental Mild Summer, Wet All Year
Ecoregion59g - Long Island Sound Coastal Lowland
11766 Annual Climate Data
JanFebMarAprMayJunJulAugSepOctNovDecAnnual
Avg Min Temp (°F)23253139495864645746382944
Avg Max Temp (°F)39415060707984827565544462
Avg Precip (In.)4.073.044.264.2143.843.593.963.743.793.943.9946.43

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