2011 | Act of Parliament | Act | 2011 ATP Challenger Tour | Statute Law Revision Act 1948 | United States Postal Service | Statute Law Revision Act 1888 | 2011 ATP World Tour | Act of Congress | 2011 Rugby World Cup | 2011 ITF Women's Circuit | United States Department of Health and Human Services | 2011 TÅhoku earthquake and tsunami | 2011 Pan American Games | 2011 Christchurch earthquake | Reform Act 1832 | Patient Protection and Affordable Care Act | General Services Administration | Endangered Species Act | Office of Strategic Services | Digital Millennium Copyright Act | Clean Water Act | American Recovery and Reinvestment Act of 2009 | 2011 Summer Universiade | National School Lunch Act | 2011 Pacific Games | Statute Law Revision Act 1863 | Criminal Justice Act 1988 | Local Government Act 1972 | Americans with Disabilities Act of 1990 |
Since 1 October 2011, the main piece of legislation is the Postal Services Act 2011, although some parts of the Postal Services Act 2000 are still in force.