Some USPS services soon will increase by as much as 9.2%. Here's what and when customers will see a change at the post office ...

The boxes are provided by USPS for free, and if your shipment is going to Zones 1-4, you'll find that this option is usually less expensive than Flat Rate Boxes. Priority Mail Medium Flat Rate Box ...

Its pricing relies on the weight and size of the package ... may be best sent using the USPS Priority Mail Small Flat Rate Box for $11.00. This box is approximately 8 inches long by 5 inches ...

USPS is increasing rates in parcel delivery services, effective this week. Here's what to know about the cost to ship your packages.