Quickly via Google looked up the number of people in this country who receive the following (in millions):
Social Security: 60
Medicaid: 50
Unemployment: 10
...and added the total number of:
Federal Employees: 15
State & Local Employees: 20
Then I looked up
The population of the United States: 307
That gave me a grand total of 155,000,000 people receiving significant, personal, direct benefit or compensation from the government. (didn't count food stamps/welfare because of overlap - again, not even close to scientific.) That is, ironically 50.4%.
Enough to keep it that way.