Williamson Post Office

6144 State Route 21, Williamson, NY 14589

Contact Numbers

Phone: 315-589-5621
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 11:30am
Sunday Closed

Bulk Mail Acceptance Hours

Monday 9:30am - 11:45am, 2:15pm - 4:15pm
Tuesday 9:30am - 11:45am, 2:15pm - 4:15pm
Wednesday 9:30am - 11:45am, 2:15pm - 4:15pm
Thursday 9:30am - 10:45am, 1:45pm - 4:15pm
Friday 9:30am - 11:45am, 2:15pm - 4:15pm
Saturday 9:30am - 11:15am
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)
  • Philatelic Services
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Sure Money
  • Lobby has Copier
  • 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:

East Williamson
4995 Ridge Rd
1.7 miles away

Pultneyville
4133 Mill St
2.3 miles away

Marion
3785 S Main St
3.2 miles away

Ontario
2001 Furguson St
3.9 miles away

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