Post Offices

Post Offices in & near Smithtown, New York. Operating hours, locations, phone/fax number, services information.

Smithtown Post Office

Post Office in Smithtown, New York on Route 111. Operating hours, phone number, services information, and other locations.

Address: 25 Route 111, Smithtown, NY 11787
Phone: 631-360-6709
Fax: 631-360-0532
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 9:00am - 5:00pm
Tuesday 9:00am - 5:00pm
Wednesday 9:00am - 5:00pm
Thursday 9:00am - 5:00pm
Friday 9:00am - 5:00pm
Saturday 9:00am - 1:00pm
Sunday Closed

Lobby Hours

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 4:00pm
Sunday Closed

Last Collection Times

Monday 9:00am - 4:00pm
Tuesday 9:00am - 4:00pm
Wednesday 9:00am - 4:00pm
Thursday 9:00am - 4:00pm
Friday 9:00am - 4:00pm
Saturday 9:00am - 12:00pm
Sunday Closed

Hauppaug Post Office

Address: 960 Wheeler Rd, Hauppauge, NY 11788
Phone: 631-360-6712
Fax: 631-366-4621
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Saint Jam Post Office

Address: 325 Lake Ave, Saint James, NY 11780
Phone: 631-584-4138
Fax: 631-862-0631
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Kings Park Post Office

Address: 125 E Main St, Kings Park, NY 11754
Phone: 631-269-6481
Fax: 631-269-7875
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Nescon Post Office

Address: 226 Smithtown Blvd, Nesconset, NY 11767
Phone: 631-265-3278
Fax: 631-724-3427
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Hauppauge Industrial Park Post Office

Address: 150 Oser Ave, Hauppauge, NY 11788
Phone: 631-231-3155
Fax: 631-348-4583
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457