First-Class single piece mail volume

USPS
10.7 billion

First-Class single piece

In 2024, the Postal Service recorded 10.7 billion in First-Class single piece mail volume. First-Class single piece mail is mail bearing postage stamps — bill payments, personal correspondence, cards and letters, etc.

* | Tags: Size & scope Yearly facts USPS Fact #234 | July 1, 2025