Town Square







A Message from the Supervisor

“Welcome to Islip, the 3rd largest town in New York State, but with an endearing small town feel. We are so proud of our town…our beaches, golf courses, marinas, parks, housing opportunities for all, businesses, industrial parks, healthcare and educational institutions including our own Islip MacArthur Airport that provides many job opportunities. I sincerely hope you find this website helpful.” Angie


U.S. Postal Service Scanning Error
Causes Some “Undeliverable” Tax Payments

From the Receiver of Taxes:

On January 17 2024, Andy Wittman, the Receiver of Taxes for the Town of Islip became aware of a “scanning machine error” at the United States Postal Service (USPS) Mid-Island Processing and Distribution Center in Melville, NY. This error has caused several tax envelopes containing payments to be returned to the sender as “undeliverable.”

Property tax payments for the Town of Islip, and all of Suffolk County, are due on or before January 10, 2024 in order to avoid penalty. Do not discard the returned envelope, as its postmark serves as proof of a timely payment.

Residents who have received their envelopes returned to them are encouraged to contact the Tax Receivers office at 631-224-5580 immediately.