From the US Postal Service:
On Jan. 22, prices for most USPS Mailing and Shipping Services change. Mailing Services includes domestic and international First-Class Mail, Standard Mail, Periodicals, Package Services and Extra Services.
Highlights include a 1-cent increase to 45-cents in the price of a First-Class Mail stamp and a 3-cent increase to 32-cents in the price of a postcard. The additional ounce rate for single-piece letters remains unchanged at 20-cents. For PO Box customers, a new shorter time period, a 3-month pricing option, is available.
Click here for more information on Mailing Service price changes.
Prices for domestic and international Shipping Services also changed. Shipping Services include Express Mail, Priority Mail, First-Class Package Service, Parcel Select, Parcel Return Service, and other competitive products.
Priority Mail prices increased by an average of 3.1 percent and Express Mail prices increased by an average of 3.4 percent.
Click here for more information on Shipping Services price changes.