total number of millionaires in the US?

Answer 1

Millionaires:

Atthe beginning of this year there were 8.7 million people that held $1 million or more (in the world). These people hold a combined $33.3 trillion.

The USA has 2,669,000 millionaires (up from 2,498,000 in 2004).

There's a lot of money out there.