On April 17, 2011, the new postal price changes will go into effect. The Postal Service announced these new mailing service price increases on January 13, 2011.
Mailing service products include: First Class Mail, Standard Mail, Periodicals, Package Services, and extra services. Business mailers will see price increases in a variety of categories.
Single-piece, 1-ounce First Class Mail letters will remain 44 cents, with additional ounces increased to 20 cents. Detailed pricing information can be found online at Postal Explorer: pe.usps.com.