How Much Does A Stamp Cost In 2024 Usps. On september 16, 2024, the usps adjusted rates for priority mail® and ground advantage™ packages shipped to certain zip codes. When most postal offices start selling the stamp on monday, jan.

Postal service will increase stamp prices from 66 cents to 68 cents for letters weighing one ounce or less. Postal service is raising prices starting on july 14, including the cost of forever postage stamps.