Small business size standards are not established for this sector. Establishments in the Public Administration sector are Federal, State, and local government agencies which administer and oversee government programs and activities that are not performed by private establishments.
Concerns performing operational services for the administration of a government program are classified under the NAICS private sector industry based on the activities performed. Similarly, procurements for these types of services are classified under the NAICS private sector industry that best describes the activities to be performed. For example, if a government agency issues a procurement for law enforcement services, the requirement would be classified using one of the NAICS industry codes under 56161, Investigation, Guard, and Armored Car Services.
Read more about Small Business Size Regulations for Other Industries.
Source: Code of Federal Regulations, Title 13, Part 121 - Small Business Size Regulations
