According to the U.S. Bureau of Labor Statistics, government accounts for about 8% of jobs in the United States. Here’s the breakdown taken from 2007 census.
1,774,000 Federal government civilian employees, excluding Post Office
615,000 Post Office
1,172,913 Military enlisted
230,577 Military Officers
2,424,000 State government (excluding education and hospitals)
5,594,000 Local government (excluding education and hospitals)
That’s a total of 11,810,490 government jobs.
The total number of jobs in the U.S. in 2006 was 150,600,000, so government employment makes up 7.84% of all jobs. – DSMW