Postage Rates 2024 Flat Envelope 2024. Postage rates listed below reflect the usps price increases in effect july 14, 2024. Prices will rise by an average of 4%, with some.

New usps ® rates approved for july 14, 2024 the usps mailing services price changes will take effect july 14, 2024. On january 21 st, 2024, the usps ® will be adjusting rates for both market dominant and competitive products.