The public sector is that portion of the national economy that is owned or controlled by the government, as well as all levels of government. Examples of public sector operations are:
National government entities
State (or provincial), county, and municipal entities
Military and police
Businesses operated by the government
Infrastructure assets, such as bridges and public roads
The remaining portion of the national economy that is not in the public sector is considered to be in the private sector. It can be difficult to define the public sector, since many activities within this area are outsourced to the private sector, while other activities involve public-private partnerships.