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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

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Our dropbox is located inside the side door at our offices at 40 Nassau Avenue Islip, NY 11751.

To use this dropbox, payment may ONLY be made by check/money order, (NO CASH) item number on your check, the appropriate payment stub (please include a contact number on your stub) and be sealed in an envelope.

This dropbox is only accessible during our business hours.

TAXES SUBMITTED LATE PENALTY
December 1st – January 10th No Penalty
After January 10th 1% Penalty
After February 10th 2% Penalty
After March 10th 3% Penalty
After April 10th 4% Penalty
May 11th to May 31st 5% Penalty