2024 Postage Rates Per Ounce 2024. Changes by usps for postcards, flats & letter size. Washington, dc — today, the united states postal service filed notice with the postal regulatory.

Learn about the 2024 postage price change for usps services and products, and how it affects domestic and international mail. Send 1 oz letters or postcards around the world with one global forever ® stamp, which currently costs $1.65 and never expires, even if the postage price goes up.