Williamstown Post Office

509 State Route 13, Williamstown, NY 13493

Contact Numbers

Phone: 315-964-2412
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours







Lobby Hours
PO Box Access Available

Monday 7:00am - 6:00pm
Tuesday 7:00am - 6:00pm
Wednesday 7:00am - 6:00pm
Thursday 7:00am - 6:00pm
Friday 7:00am - 6:00pm
Saturday 7:00am - 6:00pm
Sunday Closed

Last Collection Times

Monday 3:00pm
Tuesday 3:00pm
Wednesday 3:00pm
Thursday 3:00pm
Friday 3:00pm
Saturday 10:45am
Sunday Closed

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

  • Bulk Mail Account Balance
  • Bulk Mail New Permit
  • Burial Flags
  • 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
  • Passport Appointment Hours

Visit our Links Page for links to 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:

Westdale
11129 State Route 13
3.3 miles away

Redfield
7 School Rd
5.2 miles away

Altmar
1964 Mexico St
5.8 miles away

Camden
100 Main St
6.6 miles away

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