The U.S. Postal Service is launching a set of four "SpongeBob SquarePants" stamps on Aug. 1. A sheet of 16 stamps will be $16 ...

SpongeBob SquarePants would, in theory, have little use for stamps. They would get soggy in that pineapple under the sea.

In a whimsical twist that might surprise residents of a pineapple under the sea, SpongeBob SquarePants and his aquatic friends are now ...

The USPS is increasing the price of several other products. That includes domestic postcards, which are increasing from 56 cents to 62 cents. Letters are also increasing from 69 cents to 74 cents, ...

USPS increases forever stamp prices from 73 to 78 cents effective this weekend. Postcards, letters also affected as postal ...

The stamps are Forever Stamps, meaning they are not associated with a price and can be used forever. "SpongeBob SquarePants," created by Stephen Hillenburg, debuted in 1999.