There have also been numerous deaths among civilian contractors, for which it is impossible to get a direct count. However, this site lists the names of 116, though there are surely far more.
At least 5,000-6,000 Iraqi military were killed during the course of the war itself, and something like another 12,000 civilians have been killed (though that is a number based on news reports and may be low.)
We are therefore now at something like seven times the number of people killed on 9/11, and this is just in Iraq.
We've also spent something like $125 billion dollars, and we're planning on spending something like $100 billion more. (Sources for a more accurate figure would be appreciated).