Jefferson Memorial Post Office

is currently open

This USPS post office is located in Saint Louis, MO where the date and time is currently: 5/13/2026, 1:38:06 PM

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Retail Hours

DayOpenClose
Monday9:00 AM5:00 PM
Tuesday9:00 AM5:00 PM
Wednesday9:00 AM5:00 PM
Thursday9:00 AM5:00 PM
Friday9:00 AM5:00 PM
SaturdayClosed
SundayClosed

Address

111 N 6th St
Saint Louis, MO 63101-9997

Latitude: 38.626961, Longitude: -90.1908239

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Phone numbers

Link to Official USPS page for the Jefferson Memorial post office.

Services at Jefferson Memorial Post Office

Street parking. Here's what you can do at this location:

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Label Broker
For online sellers: give your customers a Label Broker ID or QR code so they can print a prepaid USPS return label at this post office — no printer needed.

Other Services

Customer Service Referrals
Staff can help answer questions or direct you to the right resource for issues with mail delivery, address changes, or other USPS services.