Postage Rates 2024 Additional Ounce. For letters it is $.28 per additional ounce (vs. If you want to know how much a postage stamp costs right now, here are the usps current postage rates and stamp prices.
Learn about the 2024 postage price change for usps services and products, and how it affects domestic and international mail. Explore the usps postage rate shifts for postcards, flats, and letter sizes in 2024, and optimize your mailing strategies.