This major group covers all establishments operated by the United States Postal Service, which handle the collection, processing, transportation, and delivery of mail across the country and internationally. These establishments provide essential postal services, including letter and parcel delivery, postal money orders, and related operations. Contract postal stations operated under private agreements are classified in Services, Industry 7389. Companies that transport mail under contract for the United States Postal Service are classified in Industry Group 421 or Major Group 45. Private courier services focused on unaddressed advertising deliveries fall under Services, Industry 7319, while those delivering individually addressed letters or packages are also classified in Industry Group 421 or Major Group 45.
An establishment primarily engaged in providing national postal services (Major Group 43) is classified based on its primary mail-related activities, including collection, sorting, and distribution services provided under the authority of the United States Postal Service.
Industry Group 431: United States Postal Service
- 4311 United States Postal Service