2024 Stamps Usps Cost Per Kg. The cost of a forever stamp is set to increase in july 2024 as part of the us postal service's 'delivering for america' plan. Effective september 16, 2024, usps will adjust rates for priority mail ®.

The cost of a forever stamp is set to increase in july 2024 as part of the us postal service’s ‘delivering for america’ plan. Searching for the current cost of forever stamps in 2024?