US Postal Service

The United States Postal Service, also known as the USPS, was a pre-War government agency responsible for transporting packages, letters and other mail across the United States.

Background
The USPS ran post offices across the country, and pre-War records of its policies and other information can be found on a terminal in the Clarksburg post office in Appalachia. Another entity known as the United States Post Office Department also functioned within the country before the war.

Behind the scenes
The Atomic Shop description for the Postman uniform paraphrases the United States Postal Service creed.

Appearances
The United States Postal Service is mentioned only in Fallout 76.