To carry out this mission, USPS operates approximately 31,000 post offices as well as a network of production and distribution centers and facilities to house postal management.1 This represents a substantial reduction from the number of postal facilities USPS predecessor agencies operated prior to the popularization of home mail delivery. At its peak around 1901, the post office operated more than 70,000 retail post offices.
Image credit: David Tran Photo
Press release: For Sale: The Post Office 
- “For Sale: The Post Office”: https://www.rstreet.org/2020/06/29/for-sale-the-post-office/