Nassau & Suffolk Counties, New York Nassau grievance deadline March 31, 2027Nassau grievance deadline Mar 31
Long Island Property Tax
ZIP code 11742 · Suffolk County

Property taxes in Holtsville, NY 11742

ZIP 11742 (Holtsville) has 3,791 parcels in Suffolk County, including 3,107 single-family homes. The median home is valued at $596,875.

Median home value
$597k
Most homes $411k to $873k
Single-family homes
3,107
of 3,791 parcels
School districts
5
serving this ZIP code
School districts

School districts in ZIP 11742

Homes in Holtsville (11742) 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. Sachem3,624 parcels in this ZIP $9,9683,624 parcels
  2. Patchogue-Medford69 parcels in this ZIP $10,22569 parcels
  3. William Floyd11 parcels in this ZIP $6,69611 parcels
  4. Middle Country10 parcels in this ZIP $10,60010 parcels
  5. Riverhead10 parcels in this ZIP $8,94810 parcels
Towns

Towns in ZIP 11742

Questions

Frequently asked questions

What is the average property tax in Holtsville, NY 11742?

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 11742 in?

ZIP 11742 is in Suffolk 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.