What is a first class mail stamp

A First-Class Mail stamp is a type of postage stamp issued by the United States Postal Service (USPS) for sending mail within the United States. It is used to pay for the cost of mailing a letter or package weighing up to 1 ounce (28.35 grams) and measuring up to 11.5 inches (29.21 cm) in length, 6.125 inches (15.56 cm) in width, and 0.25 inches (0.635 cm) in thickness.

The cost of a First-Class Mail stamp varies depending on the weight and size of the mailpiece, as well as the destination. As of 2022, the cost of a First-Class Mail stamp is $0.55 for a standard letter weighing up to 1 ounce and measuring up to 11.5 inches in length, 6.125 inches in width, and 0.25 inches in thickness.

First-Class Mail stamps are used for sending a wide range of mailpieces, including:

First-Class Mail stamps are available in a variety of denominations, including:

It's worth noting that First-Class Mail stamps are not required for all types of mail. For example, if you are sending a package that weighs more than 1 ounce or measures more than 11.5 inches in length, 6.125 inches in width, and 0.25 inches in thickness, you may need to use a different type of postage, such as Priority Mail or Parcel Post.