Median household property tax in this Suffolk County district is $12,354/yr ($1,030/mo) — about 11% above the Long Island median of $11,118.
Out of 120 Long Island school districts, West Islip ranks at the 62th percentile for median property tax — 38% of LI districts pay more, 62% pay less.
West Islip homeowners pay 19.15 per $1,000 in core property tax (county + town + school) for the 2024–2025 roll year — the most recent rates published by the New York State Office of Real Property. Village, library, and special-district levies stack on top of this where applicable.
| Levy | Rate per $1,000 | Share of base bill |
|---|---|---|
| School | $15.098 | 78.8% |
| Town | $2.360 | 12.3% |
| County | $1.690 | 8.8% |
Source: NY ORPS combined county-town-school tax-rate file, roll year 2024. Rates lag 12–18 months because state-level publication waits for all towns and schools to certify.
Long Island school districts vary 5x in median property tax bill. West Islip sits in the 62th percentile — that's a above-average bill, above the LI median. Here are the closest neighbors by median bill.
The West Islip School District covers 8+ ZIP codes. Nearly all are within Suffolk County. ZIPs ranked by parcel count:
8,615 homeowners in this district can challenge their assessment each year. Single advertiser per district, per category — no commissions.
Apply to be featured →The median residential bill is $12,354 per year ($1,030/month). This is the median across 8,615 single-family parcels in the district. Individual bills vary widely based on assessed value, location within the district, and any village or special-district levies that apply.
Long Island property taxes reflect three layered budgets: the school district (typically 60-75% of the bill), the town, and the county. In West Islip, the school rate alone is $15.10 per $1,000 of assessed value — roughly typical for Long Island. Different districts spend different amounts per pupil, carry different debt loads, and serve different home-value bases.
The two main paths: (1) exemptions — STAR (every homeowner), Enhanced STAR (65+, income limit), Senior Citizen, Veterans, Volunteer Firefighter; (2) a tax grievance — if you can show comparable homes in your area are assessed lower, you can file with your town's Board of Assessment Review (Suffolk: third Tuesday of May; Nassau: by the March deadline). Grievance firms typically take 50% of the first year's savings on contingency.
The median single-family home in West Islip has a market value of $645,210 based on the 2024 NY State assessment roll. The 10th-90th percentile range is $522,455 to $988,024.
School quality is subjective. For objective measures, see the New York State Education Department's official report card for graduation rates, test scores, and per-pupil spending. We don't rate school quality on this site — we focus only on the property tax dimension.
One short email when rates, exemption deadlines, or grievance windows change. No spam.
Free. Unsubscribe in one click.
Estimates only — not professional advice. All figures are derived from publicly available NY State data. They are not a substitute for the official tax bill issued by your county or town receiver. Property tax outcomes vary based on exemptions, special assessments, village/library overlays, and changes that may not be reflected in our data. Verify with the Suffolk County Receiver of Taxes before making financial decisions.