National - Sending a letter will soon be a little more expensive, the U.S. Postal Service announced Tuesday. The price for a first-class mail stamp will increase 2 cents to 44 cents, starting May 11. The Postal Service said the price increase was necessary because of rising production costs. Under law, the price of stamps is not allowed to rise faster than the U.S. consumer price index, which measures inflation. The increase will cost the typical family about $3 a year. Alex Lane This email address is being protected from spambots. You need JavaScript enabled to view it.