Property taxes in Mount Sinai, NY 11766

ZIP 11766 (Mount Sinai) contains 4,461 parcels in Suffolk County, including 3,628 single-family homes. The median home value is $687,500.

Median home value

$688k

P10 $464k · P90 $1013k

Single-family parcels

3,628

of 4,461 total

School districts in ZIP

serving residents here

School districts in ZIP 11766

Residents in Mount Sinai (11766) are zoned across these school districts. The school portion of property tax is typically 60-75% of the total bill.

Mount Sinai $13,900/yr · 4,177 parcels
Longwood $9,972/yr · 41 parcels
Brookhaven-Comsewogue $11,358/yr · 34 parcels
Rocky Point $10,313/yr · 21 parcels
Miller Place $12,796/yr · 20 parcels

Towns covered by ZIP 11766

Brookhaven 4,377 parcels
Islip 31 parcels
Southold 15 parcels
Riverhead 10 parcels
Babylon 8 parcels

Frequently asked questions

What is the average property tax in Mount Sinai, NY 11766?

Property tax in ZIP 11766 varies by school district. The biggest factor is which school district your home falls into — within a ZIP, bills can vary 2-3x. Use the property tax calculator to get an exact estimate for any address.

What county is ZIP 11766 in?

ZIP 11766 falls within Suffolk County.

How do I lower property taxes in this ZIP?

File for exemptions (STAR, Enhanced STAR, Senior, Veterans) and consider a tax grievance if comparable homes nearby are assessed lower than yours.

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Methodology & sources

Parcels and assessment values: NY State Office of Real Property Services (ORPS) combined parcel file, roll year 2025.
ZIP-hamlet mapping: USPS ZIP code area + LI hamlet locality database.

Estimates only — not professional advice.