Nassau & Suffolk Counties, New York Nassau grievance deadline March 31, 2027Nassau grievance deadline Mar 31
Long Island Property Tax
ZIP code 11791 · Nassau County

Property taxes in Syosset, NY 11791

ZIP 11791 (Syosset) has 8,927 parcels in Nassau County, including 8,268 single-family homes. The median home is valued at $687,000.

Median home value
$687k
Most homes $519k to $1.39M
Single-family homes
8,268
of 8,927 parcels
School districts
5
serving this ZIP code
School districts

School districts in ZIP 11791

Homes in Syosset (11791) are zoned into these school districts. The school portion is typically 60–75% of the bill, so the district on your tax bill matters more than the ZIP on your mail.

  1. Syosset7,258 parcels in this ZIP $16,2837,258 parcels
  2. Cold Spring Harbor567 parcels in this ZIP $30,783567 parcels
  3. Jericho149 parcels in this ZIP $16,828149 parcels
  4. Oyster Bay-East Norwich134 parcels in this ZIP $11,108134 parcels
  5. Hicksville81 parcels in this ZIP $8,02681 parcels
Towns

Towns in ZIP 11791

Questions

Frequently asked questions

What is the average property tax in Syosset, NY 11791?

It depends on the school district. Within one ZIP code, bills can differ two- or threefold between districts. Use the property tax calculator for an estimate on any address.

What county is ZIP 11791 in?

ZIP 11791 is in Nassau County.

How do I lower property taxes in this ZIP code?

Apply for every exemption you qualify for (STAR, Enhanced STAR, senior, veterans) and consider a tax grievance if comparable homes nearby are assessed lower than yours.

Method

Methodology and sources

  • Parcels and assessment values: NY State Office of Real Property Tax Services (ORPTS) combined parcel file, roll year 2025.
  • ZIP to hamlet names: USPS ZIP code areas and Long Island hamlet names.

Estimates only, not professional advice.