St. Louis MO —The St. Louis MO Main Post Office will be closed on Monday, September 7th, 2020, in observance of Labor Day. There will be no mail delivery, caller service or Post Office Box service.  All services resume on Tuesday, September 8rd. The Post Office will be open regularly scheduled hours on Saturday, September 5th.

Customers who wish to purchase stamps, mail packages, or ship urgent letters or packages on September 7th may use the Self Service Kiosks available at select post offices. The ATM-like kiosk accepts credit or debit cards only and can handle about 80 percent of typical postal transactions – like weigh packages and dispense postage for Priority Express, Priority, First-Class and Parcel Post mail.  Self Service Kiosks are accessible 24 hours a day, seven days a week.

To obtain the phone number of a specific Post Office, customers may call 1-800-ASK-USPS.

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