Subchapter A The Board of Governors of the U.S. Postal Service
Subchapter B International Mail
Subchapter C Post Office Services [Domestic Mail]
Subchapter D Organization and Administration
Subchapter E Restrictions On Private Carriage of Letters
Subchapter F Personnel
Subchapter G Postage Programs
Subchapter H Procurement System for the U.S. Postal Service: Intellectual Property Rights Other Than Patents
Subchapter J Postal Service Debt Obligations; Disbursement Postal Money Orders
Subchapter K Environmental Regulations
Subchapter L Special Regulations
Subchapter N Procedures