First Class Postage Rates 2025 Large Envelope. Download your copy of our postage rate chart and 2025 usps promotions calendar. Usps first class large envelopes are an economical way to send up to 13 oz.

Download your copy of our postage rate chart and 2025 usps promotions calendar. Washington — today, the postal service filed notice with the postal regulatory commission (prc) for shipping services price changes to take effect january 19,.