The cost of mailing a letter goes up a penny to $0.42 cents on Monday, May 12th, 2008
The cost to mail a post card will also go up a penny, to 27 cents.
Other rates set for Monday:
Large envelope, 2 ounces, $1, up 3 cents.
Money Orders up to $500, $1.05, unchanged.
Certified mail, $2.70, up 5 cents.
First-class international letter to Canada or Mexico, 72 cents, up 3 cents.
First-class international letter to other countries, 94 cents, up 4 cents.
Priority mail flat-rate envelope, $4.75, up 25 cents.
Express mail flat-rate envelope, $16.50, up 25 cents.