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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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Third Party Notifications Request

If you are 65 or older and/or are disabled and you own and occupy a one, two, or three family residence, you may designate a consenting adult third-party to receive duplicate copies of your tax bills and notices of unpaid taxes. Please fill out the attached form and submit.

Change of Address (COA)

If you would like to have your property tax bill and all other correspondence from this office mailed to a different address other than what is on file, please fill out the attached form and submit.

***NOTE*** This COA only changes the address you wish to have mail delivered. It does not change ownership. If you need to change ownership, add/remove a name or entity, please contact the Suffolk County Clerk’s office.

Snowbird Form

The Snowbird form is for taxpayers who wish to have a COPY of their December Tax Bill mailed to an alternate location. You will still receive a Tax Bill to the address we have on file.