Us Postage Rates 2024 Chart. Effective september 16th, usps will adjust rates for priority mail and ground advantage. As an independent organization, the prc develops and implements a modern postal rate regulation system and oversees the usps, including rates and services, to ensure the.

Postal service filed notice with the postal regulatory commission (prc) today of price changes for shipping services to take. Effective september 16th, usps will adjust rates for priority mail and ground advantage.