Stamp Prices Increase: What to Know for Your Next Trip to the Post Office

The cost of stamps is going up again later this month.

Effective Jan. 27, stamps for first-class letters will go up a penny to 46 cents. Postcards also will see a one-cent increase, to 33 cents.

In addition, the U.S. Postal Service is rolling out a new "Global Forever Stamp," which allows customers to mail letters internationally for one set price of $1.10.

Meanwhile, new pricing for Priority Mail Flat Rate products include:

• Small box — $5.80
• Medium box — $12.35
• Large box — $16.85
• Large APO/FPO box — $14.85
• Regular envelope — $5.60
• Legal envelope — $5.75
• Padded envelope — $5.95