How Many Sheets of 8 1/2 Inches X 11 Inches Paper Is Still Considered First-Class Mail?

By Staff WriterLast Updated Apr 4, 2020 2:21:27 AM ET

The number of sheets of paper you can send using one First Class Mail stamp in the United States varies by the weight or quality of the paper. The post office also counts the stamp and return address sticker in the total weight of the letter.