Port Jefferson Post Office

407 E Main St Ste 17, Port Jefferson, NY 11777

Contact Numbers

Phone: 631-473-1065
Fax: 631-928-4632
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 4:30pm
Tuesday 4:30pm
Wednesday 4:30pm
Thursday 4:30pm
Friday 4:30pm
Saturday 1:00pm
Sunday Closed

*This facility does not process US Passports applications or renewals. Check nearby locations below.

  • 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
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking

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:

Port Jefferson Station
544 Jefferson Plz
0.9 mile away

East Setauket
450 Route 25a
1.8 miles away

Setauket
101 Main St
1.9 miles away

Mount Sinai
457 Route 25a
1.9 miles away

Reviews

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Post office employee was very disrespectful to me and refused to ship my package that I already paid for. I will be seeking legal action. She cost my business money by refusing to mail my package. My customer canceled the order because I could not ship the package today thanks a lot.
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Post man had to come to the door for a signature So my St. Bernard puppy started barking and the mailman had some kind of spray in his hand in his hand and he was going to spray my dog. The UPS guy comes to my house every day he actually carries dog treats in his pocket for this kind of problem I don’t know why the post office can’t do the same
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