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

The price of a Priority Mail flat rate envelope (size 12-1/2″ x ... x 9-1/2″) will jump from $32 to $33.24. To see a full-chart of USPS Ground Advantage and Parcel Select prices, click here.

If you want to ship parcels using the United States Postal Service ... shipping services will increase next week. Small Flat Rate Box; 8-5/8″ x 5-3/8″ x 1-5/8″ Inside 8-11/16″ x 5-7/1 ...