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

January 29th, 2021 Town Clerk Olga H. Murray is reminding residents that while Islip Town Hall remains closed to the public due to COVID-19, residents may continue to conduct business with the Clerk's Office and Registrar Office via mail, telephone and email.

Residents may send mail to 655 Main Street, Islip, NY 11751, email This email address is being protected from spambots. You need JavaScript enabled to view it., or call (631)224-5490 (Clerk's Office), or (631)224-5498 for the Registrar.

Marriage license applications and marriage ceremonies will still be conducted on site at Town Hall by appointment only. Please call to schedule an appointment. Residents are encouraged to contact the Town Clerk's Offices at (631)224-5490 for questions on individual matters.

For more information visit the Town Clerk's webpage at