Zip Code 11766 — Mount Sinai, NY
11766 is a ZIP Code associated with Mount Sinai, NY, located within Suffolk. 11766 ranks #51 out of 108 ZIP codes in Suffolk County by population (and #497 out of 1,826 in NY). The area supports an estimated population of 10,750 residents across Data Pending housing units, with a population density of 688.6 people per square mile.
WorldPlaceData database updated: October 2026
📍 View location on OpenStreetMap (40.936020, -73.016450)
| Data Metric | Local Statistic |
|---|
| Postal / Zip Code | 11766 |
| Primary City | Mount Sinai |
| State / Province | NY |
| County | Suffolk |
| Total Population | 10,750 |
| Median Household Income | Data Pending |
| Total Housing Units | Data Pending |
| Population Density | 688.6 people/sq mi |
| Timezone | America/New_York |
How 11766 Compares
| Metric | ZIP 11766 | Suffolk County | NY State Average |
|---|
| Population | 10,750 | 1,476,044 (Total) | 19,771,902 (Total) |
| Average ZIP Income | Data Pending | N/A | N/A |
| Population Density | 688.6 /sq mi | -- | -- |
| County Pop Rank | #51 of 108 | -- | -- |
Nearby ZIP Codes
| ZIP Code | City | Distance | Population | Median Income |
|---|
| Zip 11764 | Miller Place | 2.1 mi | 12,551 | N/A |
| Zip 11776 | Port Jefferson Station | 2.2 mi | 22,808 | N/A |
| Zip 11777 | Port Jefferson | 2.7 mi | 9,396 | N/A |
| Zip 11789 | Sound Beach | 2.8 mi | 7,369 | N/A |
| Zip 11727 | Coram | 3.9 mi | 28,495 | N/A |
Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →