Yes, the United States Postal Service (USPS) does deliver on Sundays, but it’s limited to specific types of mail and locations.

Here’s a breakdown of what you can expect for Sunday deliveries:
- Priority Mail Express: This is the USPS’s fastest domestic service and it delivers 365 days a year, including Sundays, for an additional fee. This service comes with a money-back guarantee if the delivery time is not met.
- Amazon Packages: Due to a long-standing agreement, USPS delivers Amazon packages on Sundays. If you order from Amazon, even with standard shipping, your package may be delivered by a USPS carrier on a Sunday, especially in metropolitan and high-volume areas. There is no extra delivery charge to the customer for this service.
What is NOT delivered on Sunday? Regular mail services, including First-Class Mail (letters, cards), USPS Marketing Mail, and Media Mail, are not delivered on Sunday. Saturday is a normal business day for these types of mail.
Key Points to Remember:
- Post Office Hours: Most USPS post offices are closed on Sundays.
- Cost: Sunday delivery for Priority Mail Express costs an extra fee (currently $12.50).
- Tracking: You can track your Priority Mail Express and Amazon packages on the USPS website to see if a Sunday delivery is scheduled.
- Holidays: During peak holiday seasons, the USPS may expand Sunday delivery to include other package types to handle the increased volume.