2024 Postage Rates Per Ounce In Usa. Postcards sent domestically will be 56 cents, up from 53 cents. Drop shipped flats 4 oz or more saw increases as high as 23.3%.

Washington, dc — today, the united states postal service filed notice with the postal regulatory commission (prc) of mailing services price changes to take effect jan. The price for each additional ounce has increased from 24 cents to 28 cents.