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Postal Porter Square Post Office
1953 Massachusetts Ave, Cambridge, MA 02140
Phone: 617-876-5599
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)
PO Box Access Available
Monday 7:30am - 6:30pm
Tuesday 7:30am - 6:30pm
Wednesday 7:30am - 6:30pm
Thursday 7:30am - 6:30pm
Friday 7:30am - 6:30pm
Saturday 7:30am - 2:00pm
Sunday Closed
Monday 5:30pm
Tuesday 5:30pm
Wednesday 5:30pm
Thursday 5:30pm
Friday 5:30pm
Saturday 2:00pm
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
- 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:
West Somerville
58 Day St Ste 100
0.3 mile away
Harvard Square
125 Mount Auburn St Ste 1
0.7 mile away
Tufts University
470 Boston Ave
0.7 mile away
Union Square
18 Bow St
1.0 mile away
Middlesex County
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