from DailyKos:

Earlier this year, it was reported that a Nobel-prize winning economist estimated the United States’ cost of waging war (and causing a civil war) in Iraq to be between one and two trillion dollars, far higher than official estimates. By obtaining U.S. census figures and dividing them by the low end (one trillion dollars) of this estimate, I have come up with a per state and per household cost (see the table at the botom of the original DailyKos posting). The per household cost of the Iraqi Civil War to each United States household is (I hope you are sitting) $9,480.46. The price tag per United States citizen is $3,373.70.