Postage Rates 2025 Postcard 2025. Changes by usps for postcards, flats & letter size. New usps ® rates approved for july 14, 2025 the usps mailing services price changes will take effect july 14, 2025.
The postal service is raising. Washington, dc — today, the united states postal service filed notice with the postal regulatory commission (prc) of mailing services price changes to take.