From Citizendium, the Citizens' Compendium
Public sector : Organisations and activities that are under the control of central, provincial and local government, including public services and public corporations.
This article contains just a definition and optionally other subpages (such as a list of related articles), but no metadata. if you want to expand this into a full article.
Generally, the concept of the public sector also includes public lands, such as local, state and national parks and lands held in the public domain or public trust, governmental and other public buildings.