How many employees does NASA have?

23,000.

As stated by NASA in the 2009’s Performance and Accountability Report, there are over 23,000 NASA employees: more than 18,000 civil servants, allocated at the organization’s 9 centers, headquarters, the NASA Shared Services Center, and 5,000 other employees at the Jet Propulsion Laboratory. In 2009, NASA was considered the third best place to work in the public service sector.