Commack Post Office

150 Veterans Memorial Hwy, Commack, NY 11725

Contact Numbers

Phone: 631-543-3647
Fax: 631-543-7487
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 24 hours
Tuesday 24 hours
Wednesday 24 hours
Thursday 24 hours
Friday 24 hours
Saturday 24 hours
Sunday 24 hours

Last Collection Times

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

Passport Appointment Hours*

Monday 9:30am - 3:30pm
Tuesday 9:30am - 3:30pm
Wednesday 9:30am - 3:30pm
Thursday 9:30am - 3:30pm
Friday 9:30am - 3:30pm
Saturday 9:30am - 12:00pm
Sunday Closed

  • Visit our Passport FAQ page for a complete overview of what to bring, what you need to know, and how long it will take.
  • You will need two forms of Identification with copies.
  • A passport quality photo. Available at location.
  • The appropriate application form printed and filled out, and the required fee for applying or renewing.
  • You can find up to date costs, information, and forms at the State Departments Travel Site

*An appointment is required to apply for or renew US Passports. Please Call 631-543-7476 or schedule online.

Bulk Mail Acceptance Hours

Monday 9:00am - 3:00pm
Tuesday 9:00am - 3:00pm
Wednesday 9:00am - 3:00pm
Thursday 9:00am - 3:00pm
Friday 9:00am - 3:00pm
Saturday Closed
Sunday Closed

  • Bulk Mail Acceptance
  • Bulk Mail Account Balance
  • Bulk Mail New Permit
  • Burial Flags
  • Business Line
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Packaged Stamps
  • Passport Acceptance
  • Passport Photo
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking
  • Passport Appointment Hours

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:

Hauppauge Industrial Park
150 Oser Ave
1.4 miles away

Kings Park
125 E Main St
2.3 miles away

East Northport
297 Larkfield Rd
2.3 miles away

25 2nd Ave
2.6 miles away


*Comments below are not read by postal employees. Please do not post personal information.

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why do you complain here when it literally says above that these are NOT read by postal employees.are you really that lonely?????


I'd like to acknowledge the outstanding experience I've recently had at the Commack branch. Macy's mistakenly sent my purchases to my old PO Box at Commack (not used in 8 years) this last Christmas. When I called to ask about them, I interacted with Edith, one of your staff, who took the time and made the effort to find my packages and keep them for me. I feared that they could be lost forever. Thank you so much Edith and everybody at the Commack US Post Office. Rocio


Our address is 84 Shirley Court, Commack, 11725. Today is Saturday January 6th. Our last mail delivery was Wednesday January 3rd. I realize it snowed heavily on Thursday but we have not had a mail delivery in 3 days. I shoveled an access to the mailbox on Thursday as I always do. This has never happened for so long before and I don't understand. I would appreciate a response.


Any questions ask for Todd the Supervisor, very knowledgeable and doesn't smell at all.

* is not a part of, or affiliated with, the official United States Postal Service (USPS).