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Postal Islip Post Office
309 Main St Unit 3, Islip, NY 11751
Phone: 631-581-7931
Fax: 631-224-1376
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)
PO Box Access Available
Monday 5:00am - 5:30pm
Tuesday 5:00am - 5:30pm
Wednesday 5:00am - 5:30pm
Thursday 5:00am - 5:30pm
Friday 5:00am - 5:30pm
Saturday 5:00am - 4:00pm
Sunday Closed
Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 3:00pm
Sunday Closed
Monday Closed
Tuesday Closed
Wednesday Closed
Thursday 9:30am - 11:00am
Friday 9:30am - 11:00am
Saturday Closed
Sunday Closed
Monday 9:00am - 2:00pm
Tuesday 9:00am - 2:00pm
Wednesday 9:00am - 2:00pm
Thursday 9:00am - 2:00pm
Friday 9:00am - 2:00pm
Saturday 9:00am - 12:00pm
Sunday Closed
*Appointments are required outside of walk-in hours to apply for or renew US Passports. Please Call or schedule online.
Monday 9:30am - 2:30pm
Tuesday 9:30am - 2:30pm
Wednesday 9:30am - 2:30pm
Thursday 9:30am - 2:30pm
Friday 9:30am - 2:30pm
Saturday Closed
Sunday Closed
Visit our Links Page for Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, and Available Jobs.
*Please call to verify information. Is anything incorrect? Let us know here
Nearby Post Offices:
Penataquit
10 Bay Shore Ave
1.2 miles away
Islip Terrace
136 Carleton Ave
1.2 miles away
East Islip
11 Greenwood Ave
1.3 miles away
Federal Court House
101 Federal Plz
1.7 miles away
Suffolk County