Onset Post Office

214 Onset Ave, Onset, MA 02558

Contact Numbers

Phone: 508-295-4550
Fax: 508-295-2997
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 6:30am - 5:15pm
Tuesday 6:30am - 5:15pm
Wednesday 6:30am - 5:15pm
Thursday 6:30am - 5:15pm
Friday 6:30am - 5:15pm
Saturday 6:30am - 3:00pm
Sunday Closed

Last Collection Times

Monday 4:30pm
Tuesday 4:30pm
Wednesday 4:30pm
Thursday 4:30pm
Friday 4:30pm
Saturday 2:00pm
Sunday Closed

Bulk Mail Acceptance Hours

Monday 9:00am - 12:30pm, 1:30pm - 3:00pm
Tuesday 9:00am - 12:30pm, 1:30pm - 3:00pm
Wednesday 9:00am - 12:30pm, 1:30pm - 3:00pm
Thursday 9:00am - 12:30pm, 1:30pm - 3:00pm
Friday 9:00am - 12:30pm, 1:30pm - 3:00pm
Saturday Closed
Sunday Closed

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

  • 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)
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Street 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:

East Wareham
2991c Cranberry Hwy
0.7 mile away

Monument Beach
436 Shore Rd
2.1 miles away

Buzzards Bay
220 Main St
2.2 miles away

248 Main St
2.3 miles away


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The employees are not pleasant at all. They bark orders at you! The hours are ridiculous! They do not wear masks at all but we are required or they wont help us! Seriously Onset get it together.


I own a seasonal property in Onset. I needed a PO Box since we do not have mail delivery here. I went online to fill out the application, and paid the fee. I printed out a copy of my utility bill and had two other forms of ID including my driver's license. The woman in the lobby told me I had to fill the same form out again, and to go home and get a copy of my car registration. ???? Not going to do this to pacify the woman behind the counter because it is not required by law. Ridiculous.


Can you tell me why the USPS is not delivering my mail to me. I check the Onset, Massachusetts post office almost daily. I am getting cancellation notices because of this problem. I check both my Post Office box as well as general delivery! Thanks.


This P.O. has hours built for bankers. It is crazy to think I cannot access my p.o. box after 5p on weekdays and not at all on Sunday's! I might as well take a Sunday drive to Cape Cod to pick up my mail.Onset is CLOSED even for p.o. boxes on Sunday.


Woohoo I hear you girlfriend. Mmmhmmm. You tell em
• Replied to EGale


The hours of operation we absolutely ridiculous and make it impossible for the average working person to get their mail, especially the retail hours. They make it almost impossible to get your packages before or after work. I shouldn’t have to go into work late due to my mailing service. :(

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